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|     |              | LOGIC-LM: |          |     | Empowering  |          | Large     | Language |     | Models          | with |     |
| --- | ------------ | --------- | -------- | --- | ----------- | -------- | --------- | -------- | --- | --------------- | ---- | --- |
|     |              |           | Symbolic |     | Solvers for | Faithful |           | Logical  |     | Reasoning       |      |     |
|     | LiangmingPan |           |          |     | AlonAlbalak |          | XinyiWang |          |     | WilliamYangWang |      |     |
UniversityofCalifornia,SantaBarbara
{liangmingpan, alon_albalak, xinyi_wang, wangwilliamyang}@ucsb.edu
Abstract
|     |     |     |     |     |     |     |     |     | Problem | Goal |     |     |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | ------- | ---- | --- | --- |
LargeLanguageModels(LLMs)haveshown
| human-like |      | reasoning |         | abilities | but still strug- |     |     |     |     |     |     |     |
| ---------- | ---- | --------- | ------- | --------- | ---------------- | --- | --- | --- | --- | --- | --- | --- |
| gle        | with | complex   | logical | problems. | This             | pa- |     |     |     |     |     |     |
Problem
Symbolic
| per     | introduces |            | a novel  | framework,       | LOGIC-        |     |     |       |     |             |             |     |
| ------- | ---------- | ---------- | -------- | ---------------- | ------------- | --- | --- | ----- | --- | ----------- | ----------- | --- |
|         |            |            |          |                  |               |     |     |       |     | Formulator  | Formulation |     |
| LM,     | which      | integrates |          | LLMs             | with symbolic |     |     |       |     |             |             |     |
| solvers |            | to improve | logical  | problem-solving. |               |     |     |       |     |             |             |     |
| Our     | method     | first      | utilizes | LLMs             | to translate  |     |     | Self- |     |             |             |     |
a natural language problem into a symbolic Refine Symbolic  Symbolic
|                                           |        |            |     |                    |             |     |     |     |     | Reasoner  |     | Result |
| ----------------------------------------- | ------ | ---------- | --- | ------------------ | ----------- | --- | --- | --- | --- | --------- | --- | ------ |
| formulation.                              |        | Afterward, |     | adeterministicsym- |             |     |     |     |     |           |     |        |
| bolic                                     | solver | performs   |     | inference          | on the for- |     |     |     |     |           |     |        |
| mulated                                   |        | problem.   | We  | also introduce     | a self-     |     |     |     |     |           |     |        |
| refinementmodule,whichutilizesthesymbolic |        |            |     |                    |             |     |     |     |     | Result    |     |        |
| solver’serrormessagestorevisesymbolicfor- |        |            |     |                    |             |     |     |     |     |           |     | Answer |
Interpreter
| malizations. |     | WedemonstrateLOGIC-LM’sef- |     |     |     |     |     |     |     |     |     |     |
| ------------ | --- | -------------------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
fectivenessonfivelogicalreasoningdatasets:
|              |     |              |     |             |            |     |     | Figure1: | OverviewofourLOGIC-LMframework. |     |     |     |
| ------------ | --- | ------------ | --- | ----------- | ---------- | --- | --- | -------- | ------------------------------- | --- | --- | --- |
| ProofWriter, |     | PrOntoQA,    |     | FOLIO,      | LogicalDe- |     |     |          |                                 |     |     |     |
| duction,     |     | and AR-LSAT. |     | On average, | LOGIC-     |     |     |          |                                 |     |     |     |
DespitetheadvancesofLLMs,theystillstrug-
LMachievesasignificantperformanceboost
glewithcomplexlogicalreasoningproblems(Liu
of39.2%overusingLLMalonewithstandard
promptingand18.4%overLLMwithchain-of- et al., 2023b). Recent studies (Golovneva et al.,
2023;Ribeiroetal.,2023b;Lyuetal.,2023)found
| thoughtprompting. |     |     | Ourfindingssuggestthat |     |     |     |     |     |     |     |     |     |
| ----------------- | --- | --- | ---------------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
LOGIC-LM, by combining LLMs with sym- that LLMs occasionally make unfaithful reason-
boliclogic,offersapromisingavenueforfaith-
|     |     |     |     |     |     |     | ing, | i.e., | the derived | conclusion | does | not follow |
| --- | --- | --- | --- | --- | --- | --- | ---- | ----- | ----------- | ---------- | ---- | ---------- |
1
fullogicalreasoning. the previously generated reasoning chain. While
chain-of-thoughtmayimitatehumanreasoningpro-
1 Introduction
|     |     |     |     |     |     |     | cesses, | the | fundamental | nature | of LLMs | remains |
| --- | --- | --- | --- | --- | --- | --- | ------- | --- | ----------- | ------ | ------- | ------- |
Logical reasoning is a cognitive process that in- that of black-box probabilistic models, lacking a
volvesusingevidence,arguments,andlogictoar- mechanismtoguaranteethefaithfulnessofreason-
riveatconclusionsormakejudgments(Huangand ing(Shanahan,2022). Incontrast,symbolicinfer-
Chang,2023). Itplaysacentralroleinintelligent enceengines,suchasexpertsystems(Metaxiotis
systemsforproblem-solving,decision-making,and etal.,2002), arefaithfulandtransparentbecause
criticalthinking. Recently,largelanguagemodels the reasoning is based on symbolic-represented
(LLMs)(Brownetal.,2020;Ouyangetal.,2022a; knowledgeandfollowswell-definedinferencerules
OpenAI,2023)haveexhibitedemergentabilityto thatadheretologicalprinciples. Themainobsta-
“reason” like human (Wei et al., 2022a). When cle is how to accurately translate a problem into
promptedwithstep-wiseexplanationsofreasoning symbolicrepresentations,consideringtheinherent
(“chain of thoughts”), or a simple prompt “Let’s ambiguityandflexibilityofnaturallanguage. This
think step by step.”, these models are able to an- is precisely where LLMs excel, making LLMs a
swerquestionswithexplicitreasoningsteps(Wei promisingcomplementtosymbolicsolvers.
etal.,2022b;Kojimaetal.,2022). This drives our exploration of neuro-symbolic
methodsthatintegrateLLMswithsymbolicreason-
1Codeanddataarepubliclyavailableathttps://github.
com/teacherpeterpan/Logic-LLM. ing. AsillustratedinFigure1,wepresentLOGIC-
3806
FindingsoftheAssociationforComputationalLinguistics:EMNLP2023,pages3806–3824
December6-10,2023©2023AssociationforComputationalLinguistics

LM,anovelframeworkthatdecomposesalogical (§ 4.3). Finally, by analyzing the impact of self-
ProblemFor-
reasoningproblemintothreestages: refinement,wehighlighttheeffectivenessofincre-
mulation, Symbolic Reasoning, and Result Inter- mentally revising symbolic formalizations when
pretation. During problem formulation, an LLM interactingwiththesymbolicsolver(§4.4).
| converts                                     | the natural |            | language | description   |       | of the  |                                    |     |     |     |     |     |     |
| -------------------------------------------- | ----------- | ---------- | -------- | ------------- | ----- | ------- | ---------------------------------- | --- | --- | --- | --- | --- | --- |
| problemintoanappropriatesymbolicformulation, |             |            |          |               |       |         | 2 RelatedWork                      |     |     |     |     |     |     |
| identifying                                  | key         | entities,  | facts,   | and           | rules | present |                                    |     |     |     |     |     |     |
|                                              |             |            |          |               |       |         | LanguageModelsforLogicalReasoning. |     |     |     |     |     | Re- |
| in the problem                               |             | statement. |          | Subsequently, |       | at the  |                                    |     |     |     |     |     |     |
centworksinadaptingLLMsforlogicalreasoning
symbolicreasoningstage,adeterministicsymbolic
taskscanbebroadlycategorizedintotwogroups:
solverperformsinferenceonthesymbolicformula-
1)fine-tuningapproachesthatoptimizeLLMs’rea-
tion. Lastly,aresultinterpreterexplainstheoutput
soningabilitythroughfine-tuningortrainingspe-
andmapsittothecorrectanswer. Byincorporating cializedmodules(Clarketal.,2020;Tafjordetal.,
| LLMs with | symbolic |     | solvers, | we can | exploit | the |     |     |     |     |     |     |     |
| --------- | -------- | --- | -------- | ------ | ------- | --- | --- | --- | --- | --- | --- | --- | --- |
2022;Yangetal.,2022),and2)in-contextlearning
robustnaturallanguageunderstandingcapabilities
|     |     |     |     |     |     |     | approaches | that | design | special | prompts |     | to elicit |
| --- | --- | --- | --- | --- | --- | --- | ---------- | ---- | ------ | ------- | ------- | --- | --------- |
ofLLMstopreciselyrepresenttheproblemusing
|     |     |     |     |     |     |     | LLMs’step-by-stepreasoningcapabilities. |     |     |     |     |     | Typical |
| --- | --- | --- | --- | --- | --- | --- | --------------------------------------- | --- | --- | --- | --- | --- | ------- |
symbolicrepresentations,whilealsotakingadvan-
methodsincludechain-of-thoughtprompting(Wei
| tage of | the logical | faithfulness |     | and | transparency |     |     |     |     |     |     |     |     |
| ------- | ----------- | ------------ | --- | --- | ------------ | --- | --- | --- | --- | --- | --- | --- | --- |
etal.,2022b;Wangetal.,2023)thatgeneratesex-
| offeredbysymbolicsolvers. |     |     |     | Toimprovetheaccu- |     |     |     |     |     |     |     |     |     |
| ------------------------- | --- | --- | --- | ----------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
planationsbeforethefinalanswerandtheleast-to-
racyofthesymbolicparsing,wealsoincorporate mostprompting(Zhouetal.,2023)thatbreaksthe
theideaofself-refinementtoiterativelyrevisethe
|           |         |      |       |           |          |     | problem               | down | into | simpler                | components |     | that can |
| --------- | ------- | ---- | ----- | --------- | -------- | --- | --------------------- | ---- | ---- | ---------------------- | ---------- | --- | -------- |
| generated | logical | form | using | the error | messages |     |                       |      |      |                        |            |     |          |
|           |         |      |       |           |          |     | besolvedindividually. |      |      | Boththeaboveapproaches |            |     |          |
fromthesymbolicsolverasfeedback.
performreasoningdirectlyovernaturallanguage
We showcase the adaptability and effective- (NL),providinggreaterflexibilitythansymbolic-
| ness of   | LOGIC-LM                             |     | on five | logical | reasoning |     |                 |     |                                |      |       |           |        |
| --------- | ------------------------------------ | --- | ------- | ------- | --------- | --- | --------------- | --- | ------------------------------ | ---- | ----- | --------- | ------ |
|           |                                      |     |         |         |           |     | basedreasoning. |     | However,theintrinsiccomplexity |      |       |           |        |
| datasets: | ProofWriter(Tafjordetal.,2021),PrOn- |     |         |         |           |     |                 |     |                                |      |       |           |        |
|           |                                      |     |         |         |           |     | and ambiguity   |     | of NL                          | also | bring | undesired | issues |
toQA(SaparovandHe,2023),FOLIO(Hanetal., suchasunfaithfulreasoningandhallucinations.
2022),AR-LSAT (Zhongetal.,2022),andtheLog- Different from prior works, we use symbolic
icalDeductiondatasetfromBigBench(Srivastava
|              |                                |     |     |     |     |     | languageasthebasicunitofreasoning. |     |            |     |              |     | Thiseffec- |
| ------------ | ------------------------------ | --- | --- | --- | --- | --- | ---------------------------------- | --- | ---------- | --- | ------------ | --- | ---------- |
| etal.,2022). | Thesedatasetscoverawiderangeof |     |     |     |     |     |                                    |     |            |     |              |     |            |
|              |                                |     |     |     |     |     | tively transfers                   |     | the burden |     | of executing |     | complex,   |
logicalreasoningproblems,including: precisereasoningfromLLMstomorereliable,in-
DeductiveReasoningproblems terpretableexternalsymbolicsolvers. Simultane-
•
First-OrderLogic(FOL)reasoningproblems ously, we leverage the strong in-context learning
•
|     |     |     |     |     |     |     | ability | of LLMs | to formulate |     | the | NL-based | prob- |
| --- | --- | --- | --- | --- | --- | --- | ------- | ------- | ------------ | --- | --- | -------- | ----- |
ConstraintSatisfactionProblems(CSP)
•
|     |     |     |     |     |     |     | lem into | suitable | symbolic |     | representations, |     | thus |
| --- | --- | --- | --- | --- | --- | --- | -------- | -------- | -------- | --- | ---------------- | --- | ---- |
AnalyticalReasoning(AR)problems
•
maintainingthebenefitofflexibility.
Weintegratefourtypesofsymbolicinferencetools
Althoughpriorworks(Maoetal.,2019;Gupta
| tailoredtotheseproblems: |     |     |     | 1)logicprogramming |     |     |     |     |     |     |     |     |     |
| ------------------------ | --- | --- | --- | ------------------ | --- | --- | --- | --- | --- | --- | --- | --- | --- |
etal.,2020;Manhaeveetal.,2021;Caietal.,2021;
enginethatsupportsdeductivereasoningthrough
Tianetal.,2022;Pryoretal.,2023)alsopropose
forward/backwardchaining;2)FOLinferenceen-
|           |         |     |             |       |     |     | neuro-symbolic |     | methods |     | to combine | neural | net- |
| --------- | ------- | --- | ----------- | ----- | --- | --- | -------------- | --- | ------- | --- | ---------- | ------ | ---- |
| gine that | derives | new | conclusions | based | on  | FOL |                |     |         |     |            |        |      |
workswithsymbolicreasoning,thesemethodssuf-
rulesandfacts,3)constraintoptimizationengine
|     |     |     |     |     |     |     | fer from | limitations |     | such | as hand-crafted |     | or spe- |
| --- | --- | --- | --- | --- | --- | --- | -------- | ----------- | --- | ---- | --------------- | --- | ------- |
thatprovidessolversforCSPoverfinitedomains,
|     |     |     |     |     |     |     | cialized | module | designs | that | are | not easily | gen- |
| --- | --- | --- | --- | --- | --- | --- | -------- | ------ | ------- | ---- | --- | ---------- | ---- |
and4)booleansatisfiabilityproblem(SAT)solver
|     |     |     |     |     |     |     | eralizable, | or  | brittleness | due | to  | the difficulty | of  |
| --- | --- | --- | --- | --- | --- | --- | ----------- | --- | ----------- | --- | --- | -------------- | --- |
thatsolvesanalyticalreasoningproblems.
|                 |     |      |      |              |     |          | optimization. |     | Incontrast,weproposeamoregen- |     |     |     |     |
| --------------- | --- | ---- | ---- | ------------ | --- | -------- | ------------- | --- | ----------------------------- | --- | --- | --- | --- |
| Our evaluations |     | show | that | the strategy |     | of inte- |               |     |                               |     |     |     |     |
eralizableframeworkthatintegratesmodernLLMs
gratingLLMswithsymbolicsolversperformssig-
withsymboliclogicwithouttheneedfortraining
nificantlybetterthanpurelyrelyingonLLMsfor
ordesigningcomplexproblem-specificmodules.
| logical | reasoning, | with | an  | average | improvement |     |     |     |     |     |     |     |     |
| ------- | ---------- | ---- | --- | ------- | ----------- | --- | --- | --- | --- | --- | --- | --- | --- |
of39.2%overthestandardpromptingand18.4% Tool-augmentedLanguageModels. Language
over the chain-of-thought prompting (§ 4.1). We modelshaveinherentlimitationssuchastheinabil-
alsofindthatLOGIC-LMbecomesincreasinglyef- itytoaccessup-to-dateinformation,takeactions,
fective as the required reasoning depth increases or perform precise mathematical reasoning. To
3807

Metals conduct electricity. No giant language model could have bad performance. In an antique car show, there are three vehicles: a tractor,
Insulators do not conduct electricity. If a language model has good performance, it is used by some researchers. a convertible, and a minivan. The tractor is the second-
If something is made of iron, then it is metal. A work used by some researchers should be popular. newest. The minivan is newer than the convertible.
Nails are made of iron. If BERT is a giant language model, then the same for GPT3.
BERT is a giant language model. Which of the following is true?
A) The tractor is the oldest.
Is the following statement true, false, or Is the following statement true, false, or unknown? GPT3 is popular. B) The convertible is the oldest.
unknown? Nails cannot conduct electricity. C) The minivan is the oldest.
Problem Formulator
Rules: Facts: Domain: Variables:
• Metal𝑥,True →ConductElectricity𝑥,True • ¬(∃𝑥(LanguageModel𝑥 ∧Giant𝑥 ∧¬GoodPerformance(𝑥))) 1: oldest tractor ∈ [1, 2, 3]
• MadeOfIron𝑥,True →Metal(𝑥,True) • ∀𝑥(LanguageModel𝑥 ∧GoodPerformance𝑥 →UsedbySomeReseachers(𝑥)) 3: newest minivan ∈ [1, 2, 3]
Facts: • ∀𝑥 UsedbySomeResearchers𝑥 →Popular𝑥 convertible ∈ [1, 2, 3]
• MadeOfIronNails,True • LanguageModelbert ∧𝐺𝑖𝑎𝑛𝑡bert →LanguageModelgpt3 ∧Giantgpt3 Constraints:
• ConductElectricityInsulator,False • Languagebert tractor == 2
Query: • Giantbert minivan > convertible
• ConductElectricityNail,False Query: Polulargpt3 AllDifferentConstraint(tractor, minivan, convertible)
Symbolic
Logic Programming First-order Logic Prover Constraint Optimization SMT Solver
Reasoner
Result
ConductElectricityNail,True Entailment {convertible:1,tractor:2,minivan:3}
Interpreter
Answer The statement “Nails cannot The statement “GPT3 A) The convertible is the oldest.
conduct electricity” is false. is popular” is true.
Figure2: OverviewofourLOGIC-LMmodel,whichconsistsofthreemodules: (1)ProblemFormulatorgenerates
asymbolicrepresentationfortheinputproblemwithLLMsviain-contextlearning(2)SymbolicReasonerperforms
logicalinferenceontheformulatedproblem,and(3)ResultInterpreterinterpretsthesymbolicanswer.
addressthis,recentworkhasbeguntoaugmentlan- et al., 2022; He-Yueya et al., 2023; Jiang et al.,
guagemodelswithaccesstoexternaltoolsandre- 2023). These works demonstrate the proficiency
sources,suchastheinformationretriever(Nakano ofLLMsintranslatingaconsiderablefractionof
et al., 2021; Shi et al., 2023; Lazaridou et al., mathematicalproblemsintoformalspecifications
2022), calculator (Cobbe et al., 2021), code in- definedintoolslikeSymPy(Meureretal.,2017),
terpreter (Wang et al., 2022), planner (Liu et al., Isabelle/HOL(Paulson,1994),andLean(deMoura
2023a),andotherpre-trainedmodels(Shenetal., etal.,2015). Mathematicalreasoningcanbecon-
2023). Recentworks(Gaoetal.,2023;Chenetal., sidered a specialized subset of logical reasoning,
2022) have achieved improved performance on primarilyfocusedonnumericdeductions. Dueto
arithmetic reasoning tasks by generating Python thisnumericspecificity,mathematicalproblemsare
programsthatspecifythereasoningprocedureas oftenmorereadilytranslatabletosymbolicforms.
chainedcommandsintheorderofexecution. How- Incontrast,logicalreasoningcoversawiderarray
ever, this idea has not been extended to logical ofproblemtypes,oftenrequiringadeeperunder-
reasoningproblems,primarilyduetothechallenge standing of world knowledge and commonsense
ofrepresentingtheirhighly“non-linear”reasoning foreffectiveparsingintosymbolicforms. Despite
procedure(e.g.,hypothesizing,case-by-caseanaly- plentyofworksstudyingmathematicalreasoning,
sis,andtheprocessofelimination)withfunctional ourworkpioneersinextendingtheconceptofauto-
programming. Our work provides a novel way formalizationtoabroaderrangeoflogicalreason-
to solve this within the framework of augmented ingtaskswithmodernLLMs.
LLMs. Insteadofparsingtheproblem-solvingpro-
cedureasprograms,weonlydescribetheproblem 3 LOGIC-LM
withsymboliclanguageusingLLMsandthenof-
AsshowninFigure2,theinputsofourmodelare
floadthereasoningtoexternalsymbolicsolvers.
alogicalreasoningproblemP describedinnatural
Auto-Formalization. The concept of convert- language, along with a goal G in the form of a
ingnaturallanguageintosymbolicrepresentations multiple-choiceorfree-formquestion. LOGIC-LM
hasbeenwidelyadoptedinauto-formalizationfor thenfollowsaproblemformulation-and-reasoning
mathematical reasoning (Wu et al., 2022; Drori paradigmtosolvetheproblem.
3808

IntheProblemFormulationstage,wepromptan Logic Programming (LP) Language. Deduc-
LLMtotranslatetheproblemandthegoalintoa tivereasoningtypicallystartsfromknownfactsand
task-specificsymboliclanguage. IntheSymbolic rules,anditerativelymakesnewinferencesuntilthe
Reasoningstage,wecalladeterministicsymbolic goalstatementcanbeprovedordisproved(Poole
Prolog
solver, e.g., a logic programming engine, to ob- and Mackworth, 2010). The logic pro-
tain a symbolic-represented answer. Finally, an gramminglanguage(ClocksinandMellish,2003;
LLM- or rule-based Result Interpreter is respon- Körneretal.,2022)isarguablythemostprominent
sible for translating the answer back to natural symboliclanguagetodescribedeductivereasoning
language. Using this approach, the reasoning is problems. We adopt its grammar to represent a
guaranteed to be faithful as long as the problem problemasfacts,rules,andqueries.
formulation is correct since the answer A is the Facts: a fact F is a simple statement with a
•
resultofexecutingdeterministicalgorithms(e.g., predicate and a set of arguments, formulated as
forward/backward-chaining)embeddedwithinthe
|                   |     |                           |     |     |     | P(a ,         | ,a ),whereP |         | isthepredicatenameand |     |         |      |
| ----------------- | --- | ------------------------- | --- | --- | --- | ------------- | ----------- | ------- | --------------------- | --- | ------- | ---- |
|                   |     |                           |     |     |     | 1 ···         | n           |         |                       |     |         |      |
| symbolicreasoner. |     | Comparedtopreviousmethods |     |     |     |               |             |         |                       |     |         |      |
|                   |     |                           |     |     |     | each argument |             | a i can | be a variable,        |     | entity, | num- |
basedonchain-of-thought,ourframeworkreduces ber,orbool. Forexample,Age(Peter,31)means
| the burden | of LLMs | by  | shifting | their focus | from |     |     |     |     |     |     |     |
| ---------- | ------- | --- | -------- | ----------- | ---- | --- | --- | --- | --- | --- | --- | --- |
“Peter’sageis31”,andMadeOfIron(Nails,True)
“solvingtheproblembyreasoningstep-by-step”to
representsthefact“Nailsaremadeofiron”.
“representingtheprobleminsymboliclanguage”.
|     |     |     |     |     |     | Rules: | rules | are written | in  | the form | of  | clauses: |
| --- | --- | --- | --- | --- | --- | ------ | ----- | ----------- | --- | -------- | --- | -------- |
•
|                       |     |     |     |     |     | F 1                              | F m | F m+1 |       | F n ,whereeachF |     | i is |
| --------------------- | --- | --- | --- | --- | --- | -------------------------------- | --- | ----- | ----- | --------------- | --- | ---- |
|                       |     |     |     |     |     | ∧···∧                            | →   |       | ∧···∧ |                 |     |      |
| 3.1 ProblemFormulator |     |     |     |     |     | afactandtherulemeans“ifthefactsF |     |       |       |                 | ,   | ,F   |
|                       |     |     |     |     |     |                                  |     |       |       |                 | 1   | m    |
···
|                                              |     |     |     |     |     | aretrue,thenthefactsF |     |     |     | F   | arealsotrue.” |     |
| -------------------------------------------- | --- | --- | --- | --- | --- | --------------------- | --- | --- | --- | --- | ------------- | --- |
| Intuitively,LLMsmaystrugglewithdirectlysolv- |     |     |     |     |     |                       |     |     | m+1 | n   |               |     |
···
|             |           |     |           |          |      | Queries: | a   | query | Q is simply | another |     | fact re- |
| ----------- | --------- | --- | --------- | -------- | ---- | -------- | --- | ----- | ----------- | ------- | --- | -------- |
| ing complex | reasoning |     | problems. | However, | they |          |     |       |             |         |     |          |
•
havedemonstratedanotableabilitytocomprehend quiredtobeprovedbasedonknownfactsandrules.
| textual | inputs and | translate | them | into formal | pro- |                        |     |     |     |                   |     |     |
| ------- | ---------- | --------- | ---- | ----------- | ---- | ---------------------- | --- | --- | --- | ----------------- | --- | --- |
|         |            |           |      |             |      | First-OrderLogic(FOL). |     |     |     | Whilethelogicpro- |     |     |
grams,suchasmathematicalequations(He-Yueya
gramminglanguageefficientlyrepresentscommon
| etal.,2023)orPythoncodes(Gaoetal.,2023). |     |     |     |     | We  |           |           |     |           |        |      |         |
| ---------------------------------------- | --- | --- | --- | --- | --- | --------- | --------- | --- | --------- | ------ | ---- | ------- |
|                                          |     |     |     |     |     | deductive | reasoning |     | problems, | it may | fail | to rep- |
positthatthiscapabilitytoformulateproblemsinto
resentmorecomplexfirst-orderlogic(FOL)prob-
| different        | languages | can                         | be extended | to symbolic |     |          |         |       |         |         |     |         |
| ---------------- | --------- | --------------------------- | ----------- | ----------- | --- | -------- | ------- | ----- | ------- | ------- | --- | ------- |
|                  |           |                             |             |             |     | lems. To | address | this, | we also | include |     | the FOL |
| languagesaswell. |           | Weleveragethefew-shotgener- |             |             |     |          |         |       |         |         |     |         |
grammar(Enderton,2001)inAppendixA.Aprob-
| alizationabilityofLLMstoachievethis. |     |     |     |     | Bypro- |             |        |      |        |        |           |     |
| ------------------------------------ | --- | --- | --- | --- | ------ | ----------- | ------ | ---- | ------ | ------ | --------- | --- |
|                                      |     |     |     |     |        | lem is then | parsed | into | a list | of FOL | formulas, |     |
vidingtheLLMwithdetailedinstructionsaboutthe
|     |     |     |     |     |     | which are | divided | into | Premises | (the | known | in- |
| --- | --- | --- | --- | --- | --- | --------- | ------- | ---- | -------- | ---- | ----- | --- |
grammarofthesymboliclanguage,alongsideafew
formationfromtheproblem)andConclusion(the
demonstrationsasin-contextexamples,weobserve
|     |     |     |     |     |     | unknownformulatobeproved). |     |     |     | Anexamplesen- |     |     |
| --- | --- | --- | --- | --- | --- | -------------------------- | --- | --- | --- | ------------- | --- | --- |
thatLLMs,likeInstructGPT(Ouyangetal.,2022b)
tenceanditsFOLformulaaregiveninTable1.
andGPT-4(OpenAI,2023),caneffectivelyfollow
theinstructionstoidentifykeyentities,facts,and ConstraintSatisfaction(CSP). Constraintsat-
| rules present | in  | the problem | statement, |     | and then |           |          |        |     |         |       |      |
| ------------- | --- | ----------- | ---------- | --- | -------- | --------- | -------- | ------ | --- | ------- | ----- | ---- |
|               |     |             |            |     |          | isfaction | problems | (CSPs) |     | (Kumar, | 1992) | aims |
translate these elements into symbolic language to find the value assignment of a set of objects
followingourdefinedgrammar. that satisfy a number of constraints. A CSP
Specifically,weusefourdifferentsymbolicfor- is often defined as a triple (X,D,C), where
|     |     |     |     |     |     | X = x | ,   | ,x  |     |     |     | D = |
| --- | --- | --- | --- | --- | --- | ----- | --- | --- | --- | --- | --- | --- |
mulationstocoverfourcommontypesoflogical 1 n is a set of variables,
|     |     |     |     |     |     | {   | ··· | }   |     |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
reasoning problems: deductive reasoning, first- D , ,D isasetoftheirrespectivedomains
|     |     |     |     |     |     | 1     | n   |     |     |     |     |     |
| --- | --- | --- | --- | --- | --- | ----- | --- | --- | --- | --- | --- | --- |
|     |     |     |     |     |     | { ··· | }   |     |     |     |     |     |
orderlogicreasoning,constraintsatisfactionprob- ofvalues,andC = C , ,C isasetofcon-
|     |     |     |     |     |     |     |     | {   | 1 ··· | m } |     |     |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | ----- | --- | --- | --- |
lem, and analytical reasoning. These formula- straints. Each variable x i can take on the values
tions provide a foundation for translating natu- inthenonemptydomainD . EveryconstraintC
|     |     |     |     |     |     |     |     |     | i   |     |     | j   |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
rallanguage-basedproblemstatements. Bydefin- is a pair t ,R , where t X is a subset of k
|     |     |     |     |     |     |     | j   | j   | j   |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
|     |     |     |     |     |     |     | ⟨   | ⟩   | ⊂   |     |     |     |
ingadditionalproblem-specificformulations,our variables and R j is a k-ary relation on the corre-
spondingsubsetofdomainsD
frameworkretainstheflexibilitytoaccommodatea j . Weusetheabove
widerrangeofreasoningtasks. Next,wewilldelve syntax to define a CSP problem as variables, do-
into the grammar of each symbolic formulation. mains, and constraints. An example is given in
| ExamplesofeachproblemtypeareinFigure2. |     |     |     |     |     | bothFigure2andTable1. |     |     |     |     |     |     |
| -------------------------------------- | --- | --- | --- | --- | --- | --------------------- | --- | --- | --- | --- | --- | --- |
3809

Example
| Problem   | Formulation |                            |            |     |     |                    |                     |            |       | Solver |     | Dataset     |
| --------- | ----------- | -------------------------- | ---------- | --- | --- | ------------------ | ------------------- | ---------- | ----- | ------ | --- | ----------- |
|           |             |                            | NLSentence |     |     |                    | SymbolicFormulation |            |       |        |     |             |
|           |             | Ifthecircuitiscompleteand  |            |     |     | Complete(Circuit,  |                     | True)      |       |        |     |             |
| Deductive |             |                            |            |     |     |                    |                     |            | ∧     |        |     | ProntoQA,   |
|           | LP          | thecircuithasthelightbulb  |            |     |     | Has(Circuit,       |                     | LightBulb) |       | Pyke   |     |             |
| Reasoning |             |                            |            |     |     |                    |                     |            |       |        |     | ProofWriter |
|           |             | thenthelightbulbisglowing. |            |     |     | Glowing(LightBulb, |                     |            | True) |        |     |             |
→
First-Order ACzechpersonwroteabook x2∃ x1(Czech(x1) Author(x2,x1)
|            | FOL |                             |     |     |     | ∃ Book(x2) | Publish(x2,1946)) | ∧         |     | Prover9 |     | FOLIO |
| ---------- | --- | --------------------------- | --- | --- | --- | ---------- | ----------------- | --------- | --- | ------- | --- | ----- |
| Logic      |     | in1946.                     |     |     |     |            |                   |           |     |         |     |       |
|            |     |                             |     |     |     | ∧          | ∧                 |           |     |         |     |       |
|            |     | Onashelf,therearefivebooks. |     |     |     | blue_book  |                   | 1,2,3,4,5 |     |         |     |       |
| Constraint |     |                             |     |     |     |            |                   |           |     | python- |     |       |
CSP Thebluebookistotheright yellow_book ∈{ 1,2,3,4,5 } LogicalDeduction
| Satisfaction |     |                          |     |     |     |                        |           |         |        | constraint |     |         |
| ------------ | --- | ------------------------ | --- | --- | --- | ---------------------- | --------- | ------- | ------ | ---------- | --- | ------- |
|              |     | oftheyellowbook.         |     |     |     | blue_book>yellow_book  |           | ∈{      | }      |            |     |         |
|              |     |                          |     |     |     | repairs(Xena,          |           | radios) |        |            |     |         |
| Analytical   |     | Xenaandexactlythreeother |     |     |     |                        |           |         | ∧      |            |     |         |
|              | SAT |                          |     |     |     | Count([t:technicians], |           |         | t=Xena | Z3         |     | AR-LSAT |
| Reasoning    |     | techniciansrepairradios  |     |     |     |                        |           |         | ̸      |            |     |         |
|              |     |                          |     |     |     | repairs(t,             | radios))) |         | == 3)  |            |     |         |
∧
Table1: Asummaryofthesymbolicformulations(withexamples)andsymbolicsolversweuseforthefivedatasets
inourstudy,representingfourdifferenttypesoflogicalreasoningproblems.
BooleanSatisfiability(SAT)Formulation. SAT FOL Prover. We use Prover92 as the FOL in-
Prover9isanautomatedtheorem
| istheproblemofdecidingifthereisanassignment |     |     |     |     |     | ferenceengine. |     |     |     |     |     |     |
| ------------------------------------------- | --- | --- | --- | --- | --- | -------------- | --- | --- | --- | --- | --- | --- |
to the variables of a Boolean formula such that proverthatsupportsfirst-orderlogicandequational
theformulaissatisfied. Manyanalyticalreasoning logic. ItinitiallyconvertsFOLstatementstocon-
problemscanbeformulatedasSATproblems. We junctive normal form (CNF) and then performs
adopt the grammar defined in Ye et al. (2023) to resolution(Robinson,1965)ontheCNFtodeduce
formulateanSATproblem as(Φ, , ),where whetheraconclusionistrue,false,orunknown.
|                                           |     | P   |     | T Q |     |     |         |     |         |       |       |                |
| ----------------------------------------- | --- | --- | --- | --- | --- | --- | ------- | --- | ------- | ----- | ----- | -------------- |
| Φisasetofconstraintsdefinedunderthetheory |     |     |     |     |     | ,   |         |     |         |       |       |                |
|                                           |     |     |     |     | T   | CSP | Solver. |     | Solving | a CSP | is to | find value as- |
and isthequeryofinterest.
| Q     |              |     |            |     |         | signments    |     | for all  | variables | that | satisfy    | all given |
| ----- | ------------ | --- | ---------- | --- | ------- | ------------ | --- | -------- | --------- | ---- | ---------- | --------- |
| Table | 1 summarizes | the | four types | of  | logical |              |     |          |           |      |            |           |
|       |              |     |            |     |         | constraints. |     | Commonly |           | used | algorithms | for this  |
reasoningproblems,theirtypicaldatasets,andthe taskincludebacktracking,constraintpropagation,
symbolicformulationusedtorepresenteachtypeof and local search variants. To this end, we incor-
problem. Wealsogiveanexampleofanaturallan- python-constraint3
|     |     |     |     |     |     | porate | the |     |     |     | package | which |
| --- | --- | --- | --- | --- | --- | ------ | --- | --- | --- | --- | ------- | ----- |
guagestatementwithitscorrespondingsymbolic
offerssolversforCSPsoverfinitedomains.
| formulationforeachtype. |     | AppendixCshowsthe |     |     |     |     |     |     |     |     |     |     |
| ----------------------- | --- | ----------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
full prompts we use for the problem formulator. SATSolver. ForsolvingSATproblems,weuse
|     |     |     |     |     |     | the | Z3 theorem |     | prover | (de | Moura | and Bjørner, |
| --- | --- | --- | --- | --- | --- | --- | ---------- | --- | ------ | --- | ----- | ------------ |
ToteachLLMstobetteraligneachstatementwith
|                   |          |     |          |     |          | 2008), | a   | satisfiability |     | modulo | theories | (SMT) |
| ----------------- | -------- | --- | -------- | --- | -------- | ------ | --- | -------------- | --- | ------ | -------- | ----- |
| its corresponding | symbolic |     | form, we | use | the for- |        |     |                |     |        |          |       |
solverdevelopedbyMicrosoft4.
TheSMTsolver
| mat SYMBOLIC_FORMULA |     |     | ::: NL_STATEMENT |     |     |     |     |     |     |     |     |     |
| -------------------- | --- | --- | ---------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
inin-contextexamplestoenablebettergrounding. providesalgorithmstodeterminewhetherasetof
|     |     |     |     |     |     | mathematicalformulasissatisfiable. |     |     |     |     |     | Itgeneralizes |
| --- | --- | --- | --- | --- | --- | ---------------------------------- | --- | --- | --- | --- | --- | ------------- |
3.2 SymbolicReasoner the SAT problems to more complex formulas in-
After the problem formulator parses the problem volving real numbers, integers, and various data
|           |             |          |                 |     |     | structures |     | such | as lists, | arrays, | bit | vectors, and |
| --------- | ----------- | -------- | --------------- | --- | --- | ---------- | --- | ---- | --------- | ------- | --- | ------------ |
| P and the | goal G into | symbolic | representations |     |     |            |     |      |           |         |     |              |
Pˆ and Gˆ , we call a deterministic external solver strings. A lot of real-world analytical reasoning
dependingonthetask,toobtaintheanswerA. Ta- problemscanberepresentedasproblemsofsolv-
ingasystemofequations.
ble1summarizesthesymbolicsolversweusefor
eachtypeoflogicalreasoningproblem.
|     |     |     |     |     |     | 3.3 | Self-Refiner |     |     |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | ------------ | --- | --- | --- | --- | --- |
LPSystem. Fordeductivereasoning,weincor- Forcomplexproblems,generatingthecorrectlog-
poratethePykeexpertsystem(Frederiksen,2008),
|                   |            |                         |     |           |      | icalformmaybecomechallengingforLLMs. |       |        |           |            |                 | To           |
| ----------------- | ---------- | ----------------------- | --- | --------- | ---- | ------------------------------------ | ----- | ------ | --------- | ---------- | --------------- | ------------ |
| which makes       | inferences | based                   | on  | the logic | pro- |                                      |       |        |           |            |                 |              |
|                   |            |                         |     |           |      | address                              | this, | we     | introduce | a          | self-refinement | mod-         |
| gramminglanguage. |            | Inresponsetoaquery,Pyke |     |           |      |                                      |       |        |           |            |                 |              |
|                   |            |                         |     |           |      | ule                                  | that  | learns | to modify | inaccurate |                 | logical for- |
firstcreatesaknowledgebase,populatingitwith
2https://www.cs.unm.edu/~mccune/prover9/
| known facts | and rules. | Subsequently, |     | it  | applies |     |     |     |     |     |     |     |
| ----------- | ---------- | ------------- | --- | --- | ------- | --- | --- | --- | --- | --- | --- | --- |
3https://github.com/python-constraint/
forward-andbackward-chainingalgorithmstoin-
python-constraint
fernewfactsandsubstantiatethegoal. 4https://github.com/Z3Prover/z3
3810

mulationsusingtheerrormessagesfromthesym- eachpartrequiring0, 1, 2, 3,and 5hops
≤ ≤ ≤ ≤
bolic reasoner as feedback. Recent works (Chen ofreasoning,respectively. Weevaluatethehardest
etal.,2023;Madaanetal.,2023)haveadoptedsim- depth-5subset. Toreduceoverallexperimentation
ilarideastoimprovecodegeneration,byteaching costs, we randomly sample 600 examples in the
LLMstodebugtheirpredictedprogramsviafew- testsetandensureabalancedlabeldistribution.
shotdemonstrations. Hereweextendthisideato FOLIO (Han et al., 2022) is a challenging
refinegeneratedlogicrepresentations. Ifthesym- expert-written dataset for logical reasoning. The
bolicsolverreturnsanexecutionerror,weinstruct problemsaremostlyalignedwithreal-worldknowl-
the LLM to refine the incorrect logical form, by edgeandusehighlynaturalwordings,andtheques-
prompting it with the erroneous logic form, the tionsrequirecomplexfirst-orderlogicreasoningto
solver’serrormessage,andasetofdemonstrations solve. WeusetheentireFOLIOtestsetforevalua-
showingcommonerrorcases(e.g.,afreevariable tion,consistingof204examples.
isnotboundedtoanyquantifierinFOL)andtheir LogicalDeductionisachallenginglogicalrea-
remedies. Werunthisprocessiterativelyuntilei- soning task from the BigBench (Srivastava et al.,
ther no error messages are returned, or the maxi- 2022)collaborativebenchmark. Theproblemsare
mumnumberofallowablerevisionsisreached. mostlyaboutdeducingtheorderofasequenceof
objectsfromaminimalsetofconditions. Weuse
3.4 ResultInterpreter thefulltestsetconsistingof300examples.
Finally,theresultinterpretertranslatestheresults AR-LSAT(Zhongetal.,2022)isadatasetthat
returnedfromthesymbolicsolverbacktoanatural collects all analytical logic reasoning questions
language answer. For certain problems, this can fromtheLawSchoolAdmissionTestfrom1991to
beachievedthroughpredefinedrules;forexample, 2016. Weusethetestsetwhichhas231multiple-
mappingEntailmenttotrue. However,thispro- choice questions. AR-LSAT is particularly chal-
cesscanbemorecomplexforCSPs,e.g.,translat- lenging,withstate-of-the-artmodelsonlyachiev-
ing{convertible: 1,tractor: 2,minivan: 3}to“the ingperformanceslightlybetterthanrandomguess-
convertibleistheoldest.”. Tohandlethesevarying ing(Liangetal.,2022;Ribeiroetal.,2023a).
levelsofcomplexity,wedesignedbothrule-based Weconvertallexamplesintoastandardmultiple-
andLLM-basedresultinterpreters. Detailsofthe choiceformat,comprisingaproblemstatement,a
resultinterpreteraregiveninAppendixD. question,andpotentialanswers,asshowninFig-
ure2. Wealsoselect1-5examplesfromthetrain-
4 Experiments ingsetofeachdatasetasin-contextexamples. De-
taileddatastatisticsareinAppendixB.
Datasets. Weevaluate LOGIC-LM onfivecom-
monlogicalreasoningdatasets,asfollows. Baselines. We compare our model against two
PrOntoQA(SaparovandHe,2023)isarecent baselinesthatdependsolelyonLLMsforlogical
syntheticdatasetcreatedtoanalyzethecapacityof reasoning: 1)Standard LLMs,whichleveragein-
LLMsfordeductivereasoning. Weusethehardest context learning to directly answer the question;
fictionalcharactersversionofthedataset,basedon and2)Chain-of-Thought(CoT)(Weietal.,2022b),
theresultsinSaparovandHe(2023). Eachversion which adopts a step-by-step problem-solving ap-
isdividedintodifferentsubsetsdependingonthe proach,generatingexplanationsbeforeproviding
number of reasoning hops required. We use the the final answer. We separately evaluate the set-
hardest5-hopsubsetforevaluation. Eachquestion tings that ChatGPT (gpt-3.5-turbo), GPT-3.5
inPrOntoQAaimstovalidateanewfact’sveracity, (text-davinci-003) (Ouyang et al., 2022a) and
suchas“Trueorfalse: Alexisnotshy.”. GPT-4(gpt-4)(OpenAI,2023)serveastheunder-
ProofWriter (Tafjord et al., 2021) is another lying LLMs for all models. To ensure fair com-
commonlyuseddatasetfordeductivelogicalrea- parisons,weusethesamein-contextexamplesfor
soning. ComparedwithPrOntoQA,theproblems all models. For reproducible results, we set the
areexpressedinamorenaturalisticlanguageform. temperatureto0andselecttheresponsewiththe
Weusetheopen-worldassumption(OWA)subset highestprobabilityfromLLMs. Sinceallexamples
in which each example is a (problem, goal) pair areformedasmultiple-choicequestions,weeval-
and the label is one of {PROVED, DISPROVED, uatemodelperformancebasedontheaccuracyof
UNKNOWN}. Thedatasetisdividedintofiveparts, selectingthecorrectanswer.
3811

ChatGPT(gpt-3.5-turbo) GPT-3.5(text-davinci-003) GPT-4(gpt-4)
Dataset
Standard CoT Logic-LM Standard CoT Logic-LM Standard CoT Logic-LM
PrOntoQA 47.40 67.80 61.00 51.80 83.00 85.00 77.40 98.79 83.20
ProofWriter 35.50 49.17 58.33 36.16 48.33 71.45 52.67 68.11 79.66
FOLIO 45.09 57.35 62.74 54.60 57.84 61.27 69.11 70.58 78.92
LogicalDeduction 40.00 42.33 65.67 41.33 48.33 62.00 71.33 75.25 87.63
AR-LSAT 20.34 17.31 26.41 22.51 22.51 25.54 33.33 35.06 43.04
Table2: Accuracyofstandardpromoting(Standard),chain-of-thoughtpromoting(CoT),andourmethod(LOGIC-
LM,withoutself-refinement)onfivereasoningdatasets. ThebestresultswithineachbaseLLMarehighlighted.
4.1 MainResults GPT-3.5 GPT-4
Dataset SR
Exe_Rate Exe_Acc Exe_Rate Exe_Acc
WereporttheresultsofLOGIC-LM (withoutself-
99.4% 84.9 100.0% 83.2
refinement)andbaselinesinTable2. For LOGIC- ProntoQA − + 100.0% 0.6 85.0 0.1 100.0% 83.2
↑ ↑
LM,asymbolicsolverdoesnotreturnananswer
87.3% 73.6 99.0% 79.6
ProofWriter −
when there are grammar errors in the symbolic + 95.6% 8.3 74.1 0.5 99.0% 79.6
↑ ↑
formulation. For these un-executable cases, we 66.7% 61.8 79.9% 80.4
FOLIO −
+ 84.3% 17.6 64.3 2.5 85.8% 5.9 79.9 0.5
fallbackonusingchain-of-thoughttopredictthe ↑ ↑ ↑ ↓
Logical 100.0% 62.0 100.0% 87.6
answer. Wehavethreemajorobservations. −
Deduction + 100.0% 62.0 100.0% 87.6
1. Logic-LM significantly outperforms stan-
11.3% 57.7 32.6% 60.0
AR-LSAT −
dardLLMsandCoTacrossalldatasets.WithGPT- + 21.8% 10.5 60.3 2.6 39.8% 7.2 58.8 1.2
↑ ↑ ↑ ↓
3.5,ourmethodoutperformsstandardLLMonall
Table3: Analysisofaccuracyandexecutionstatusof
datasets, withanaverageimprovementof39.2%.
LOGIC-LM.Wepresentthepercentageofexecutable
This highlights the benefit of combining LLMs
logicalformulations(Exe_Rate)togetherwiththeaccu-
withexternalsymbolicsolversforlogicalreason- racyoftheexecution(Exe_Acc). SRrepresentsbefore
ing. LOGIC-LMalsoimprovesCoTbyalargemar- ( )andafter(+)self-refinement.
−
ginof18.4%onaverage,showingthatoffloading
thereasoningtosymbolicsolversgreatlyimproves
faithfulness compared with pure language-based thatCoTemulateshumanforward-chainreasoning:
reasoningwithCoT. beginning with known facts and sequentially de-
rivingnewconclusionsuntilthegoalismet. This
2. GPT-4outperformsGPT-3.5byalargemargin
reasoning style aligns well with problems in the
of48.46%onaverageforthestandardprompting.
PrOntoQA and ProofWriter datasets. However,
This aligns with the assertion that the main en-
FOL and CSP problems often necessitate more
hancementofGPT-4liesinitsabilitytocarryout
sophisticated reasoning strategies that are “non-
complexreasoning(OpenAI,2023). Althoughthis
linear” compared to standard forward-chain rea-
mayindicatethatthelogicalreasoningcapability
soning. Theseincludehypothesizing,conditioning,
canbeboostedbyscalinguptheLLM,weobserve
recursive inference, and the process of elimina-
thatGPT-4stillmakesnumerousunfaithfulreason-
tion. ComparedtoCoT,theintegrationofsymbolic
ingerrors. Bydelegatingthereasoningtosymbolic
solvers is better suited to these reasoning styles,
solvers, our method can further improve GPT-4
henceyieldingamoremarkedimprovementonFO-
byanaverageof24.98%and10.44%forstandard
LIO(+21.85%),LogicalDeduction(+45.67%),and
promptingandCoTprompting,respectively.
AR-LSAT(+24.14%).
3. While integrating CoT generally enhances
LLM performance, we find its benefits compara-
4.2 EffectivenessofProblemFormulator
tivelylesssubstantialorevennegativeonFOLIO,
LogicalDeduction,andAR-LSAT,withamodest We then evaluate how well LLM can translate a
improvement of 11.75%, 9.41%, and -3.2%, re- givenproblemintothesymbolicformulationused
spectively. On the contrary, the benefits of CoT byeachsymbolicsolver. InTable3,wereportthe
on ProntoQA and ProofWriter are 51.59% and percentageofsymbolicformulationsthatareexe-
33.82%, respectively. A plausible explanation is cutablebythecorrespondingsymbolicsolverfor
3812

Accuracy Standard CoT Logic-LM CoT (GPT-3.5) Logic-LM (GPT-3.5)
|     |     |     |     |     |     | Accuracy |     | CoT (GPT-4) |     | Logic-LM (GPT-4) |     |
| --- | --- | --- | --- | --- | --- | -------- | --- | ----------- | --- | ---------------- | --- |
90
| 81.7 |     |     |     |     |     | 85  |     |     |     |     |     |
| ---- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
77.3
| 80  |     | 73.6 |     |      |      |     | 78.92 |       |     | 79.9 | 79.41 |
| --- | --- | ---- | --- | ---- | ---- | --- | ----- | ----- | --- | ---- | ----- |
|     |     |      |     | 71.3 | 71.1 | 80  |       | 78.43 |     |      |       |
7076.3
73.6
75
57.7
| 60  |      | 65.3 |     |      |     |     |     |     |     |     |       |
| --- | ---- | ---- | --- | ---- | --- | --- | --- | --- | --- | --- | ----- |
|     | 52.6 |      |     | 59.4 |     | 70  |     |     |     |     | 70.58 |
47.3
| 50  |     |     |     |     |     |     |       |       |     | 64.56 | 63.84 |
| --- | --- | --- | --- | --- | --- | --- | ----- | ----- | --- | ----- | ----- |
|     |     |     |     |     | 51  | 65  | 61.27 | 62.25 |     |       |       |
38.3
| 40  |     |     |     |     | 33.5 |     |     |     |     |     |     |
| --- | --- | --- | --- | --- | ---- | --- | --- | --- | --- | --- | --- |
60
57.87
30
55
| 0   | 1   | 2   |     | 3   | 5   | Rounds | 0   |     | 1   | 2   | 3   |
| --- | --- | --- | --- | --- | --- | ------ | --- | --- | --- | --- | --- |
Reasoning Depth
|     |     |     |     |     |     | GPT-3.5 | 66.7% | 79.4% |     | 82.4% | 84.3% |
| --- | --- | --- | --- | --- | --- | ------- | ----- | ----- | --- | ----- | ----- |
Figure3: Accuracyofdifferentmodelsforincreasing GPT-4 79.9% 85.3% 85.3% 85.8%
sizeofreasoningdepthontheProofWriterdataset.
|     |     |     |     |     |     | Figure 4: | The | accuracy | for different | rounds | of self- |
| --- | --- | --- | --- | --- | --- | --------- | --- | -------- | ------------- | ------ | -------- |
refinement,withthecorrespondingexecutablerates.
| eachdataset(Exe_Rate). |     | Generally,LLMdemon- |     |     |     |     |     |     |     |     |     |
| ---------------------- | --- | ------------------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
strates high proficiency in transcribing problems ple,LOGIC-LMoutperformsCoTby7.1%,5.0%,
1
intosymbolicformats,evidencedbyitsnear100%
|          |              |              |     |     |       | 12.7%,   | 20.0%,   | and 39.4% |         | on depth-0, | depth-1, |
| -------- | ------------ | ------------ | --- | --- | ----- | -------- | -------- | --------- | ------- | ----------- | -------- |
| Exe_Rate | on ProntoQA, | ProofWriter, |     | and | Logi- |          |          |           |         |             |          |
|          |              |              |     |     |       | depth-2, | depth-4, | and       | depth-5 | problems,   | respec-  |
calDeduction. However,thehighperformanceon tively. InLOGIC-LM,multi-steplogicalreasoning
thesedatasetsissomewhatanticipated,giventhat
isdelegatedtoexternalsymbolicsolvers,thereby
theirproblemsaremostlysyntheticallygenerated,
transitioningthechallengeofLLMfromproblem-
| limiting language | variability. |     | When | it  | comes to |                                 |     |     |     |                 |     |
| ----------------- | ------------ | --- | ---- | --- | -------- | ------------------------------- | --- | --- | --- | --------------- | --- |
|                   |              |     |      |     |          | solvingtoproblemrepresentation. |     |     |     | Ideally,thecom- |     |
datasets comprising real-world, expertly crafted plexity of formally representing a problem state-
| problems, | such as FOLIO |     | and AR-LSAT, |     | GPT- |     |     |     |     |     |     |
| --------- | ------------- | --- | ------------ | --- | ---- | --- | --- | --- | --- | --- | --- |
mentinlogicalformshouldremainrelativelycon-
| 4’s performance | is notably |     | less promising, |     | with |     |     |     |     |     |     |
| --------------- | ---------- | --- | --------------- | --- | ---- | --- | --- | --- | --- | --- | --- |
stant,regardlessofwhetherthequestionsrequire
Exe_Ratescoresof79.9%and32.6%respectively.
|                  |             |     |     |          |       | simple                      | or complex | reasoning. |     | The trends       | in Fig- |
| ---------------- | ----------- | --- | --- | -------- | ----- | --------------------------- | ---------- | ---------- | --- | ---------------- | ------- |
| This discrepancy | underscores |     | the | inherent | chal- |                             |            |            |     |                  |         |
|                  |             |     |     |          |       | ure3validatethisassumption. |            |            |     | Theperformanceof |         |
lengesassociatedwithconvertingreal-worldprob-
|     |     |     |     |     |     | Standard | andCoT | declinesprecipitouslywiththe |     |     |     |
| --- | --- | --- | --- | --- | --- | -------- | ------ | ---------------------------- | --- | --- | --- |
lemsintotheirlogicalequivalents.
|     |     |     |     |     |     | escalation | of problem |     | complexity. | However, | this |
| --- | --- | --- | --- | --- | --- | ---------- | ---------- | --- | ----------- | -------- | ---- |
Exe_Rateonlyreflectsthegrammarcorrectness
|                |       |         |        |     |          | trendislessprominentfor |     |     | LOGIC-LM,indicating |     |     |
| -------------- | ----- | ------- | ------ | --- | -------- | ----------------------- | --- | --- | ------------------- | --- | --- |
| of the logical | form. | We also | report | the | accuracy |                         |     |     |                     |     |     |
thattherobustreasoningcapabilitiesprovidedby
| of the executable | samples |     | (Exe_Acc) | to  | measure |     |     |     |     |     |     |
| ----------------- | ------- | --- | --------- | --- | ------- | --- | --- | --- | --- | --- | --- |
externalsolverssubstantiallymitigateperformance
the semantic correctness. We find that logical degradationforcomplexreasoningproblems.
formsgeneratedbyGPT-4generallyachievehigh
Exe_Acc,evenforthemostchallengingAR-LSAT 4.4 ImpactofSelf-Refinement
dataset. Suchperformanceaccentuatesthepoten- InTable3,wefindthatself-refinementiseffective
tialofsymbolicsolversinbolsteringthemodel’s infixingthein-executablesymbolicformulations,
logicalreasoningprowess, contingentonthepre- increasingtheExe_Rateby5.01onaverage.
For
cisetranslationofproblemsintosymbolicforms. an in-depth analysis, we then evaluate the accu-
racyandExe_Rateacrossdifferentroundsofself-
4.3 RobustnessofReasoning
refinementonFOLIO,namely,0(norefinement),
Incorporatingsymbolicsolversalsoleadstomore 1,2,and3rounds. TheresultsareinFigure4.
robust reasoning. To illustrate this, we report Wefindthatastheroundsofself-refinementin-
theperformanceofLOGIC-LM andbaselinesfor crease,thepercentageofexecutableformulations
questions of varying complexity levels. We ran- consistentlyincreases,leadingtoanenhancement
domly selected 300 examples from each subset in the final performance. This suggests that self-
of ProofWriter, ensuring a balanced label distri- refinementservesasaneffectivetoolinaidingthe
bution. The problems in these subsets require 0, LLM to accurately frame the problem. However,
<=1,<=2,<=3,and<=5hopsofreasoning,respec- theaccuracytendstostagnateinsubsequentrounds,
tively. The results, shown in Figure 3, indicate even though the Exe_Rate continues to increase.
thatLOGIC-LMbecomesincreasinglyeffectiveas This can be attributed to the type of feedback re-
therequiredreasoningdepthincreases. Forexam- ceived by the self-refiner, which is the error mes-
3813

Problem: "Stranger Things" is a popular Netflix show. If a Netflix show is popular, Karen will binge-watch it.
If and only if Karen binge-watches a Netflix show, she will download it. Karen does not download "Black Mirror".
"Black Mirror" is a Netflix show. If Karen binge-watches a Netflix show, she will share it to Lisa.
Question: Is the following statement true, false, or uncertain? "Black Mirror" is popular.
(A) True (B) False (C) Uncertain
Generated symbolic Formulations:
Predicates:
NetflixShow(x) # x is a Netflix show.
Popular(x) # x is popular.
BingeWatch(x, y) # x binge-watches y.
Download(x, y) # x downloads y.
Share(x, y, z) # x shares y to z.
Premises:
NetflixShow(strangerThings) ∧ Popular(strangerThings) # "Stranger Things" is a popular Netflix show.
∀x (NetflixShow(x) ∧ Popular(x) → BingeWatch(karen, x)) # If a Netflix show is popular, Karen will binge-watch it.
∀x (NetflixShow(x) ∧ BingeWatch(karen, x) ↔ Download(karen, x)) # If and only if Karen … , she will download it.
NetflixShow(blackMirror) ∧ ¬Download(karen, blackMirror) # Karen does not … "Black Mirror" is a Netflix show.
∀x (NetflixShow(x) ∧ BingeWatch(karen, x) → Share(karen, x, lisa)) # If Karen … , she will share it to Lisa.
Conclusion:
Popular(blackMirror) # "Black Mirror" is popular.
Predicted answer: B
Figure5: AnexampleofthegeneratedsymbolicrepresentationandthepredictedanswerbyLOGIC-LM.
sagefromthesymbolicsolver. Thisfeedbackaids expressionsaccurately. Inthiscase,themodelfails
in converting “invalid” symbolic representations to distinguish between the meanings of “below”
intovalidones. However,avalidsymbolicrepre- and “above”, resulting in an incorrect constraint
sentationdoesnotnecessarilyequatetoa“correct” Dan > Eve. Example4exemplifiesGPT-4’schal-
problemformulationthataccuratelyrepresentsthe lenge with fully grasping the rules of FOL gram-
problem. This issue could be tackled by enhanc- mar, evidenced by the invalid generated formula:
ingtheself-refinertoincorporatefeedbackbeyond Rating(subway, y) y > 9. Theseerrorcases

the error message, e.g., a reward signal from an underscore that transforming problems into logi-
additionalmoduleevaluatingtheaccuracyofagen- cal forms remains a challenging task for modern
eratedsymbolicform. Weleavethisasapromising LLMs,duetotheintricaciesofFOLformulation,
directionforfutureexploration. the innate flexibility of natural language, and the
complexityofglobalproblemcomprehension.
4.5 CaseStudy
InFigure5,weshowanexampleofthesymbolic 5 ConclusionandFutureWork
representationsgeneratedbyGPT-4,togetherwith
thepredictedanswer. Ingeneral,LOGIC-LMhas In this work, we propose a novel approach to ad-
demonstrated a potent capacity to interpret com- dress logical reasoning problems by combining
plexproblemsintosymbolicforms. Nonetheless, largelanguagemodelswithsymbolicsolvers. We
there remain certain difficulties in accurately un- introduce Logic-LM, one instantiation of such a
derstandingthesemanticsoftheproblem. framework, and demonstrate how it significantly
We further analyze some error cases in Fig- improvesperformanceoverpureLLMsandchain-
ure 6 of Appendix E. Example 1 shows a case of-thoughtpromptingtechniques.
whereGPT-4generatesanincorrectFOLrepresen- WhileLogic-LMhasproventobeacapablesys-
tation, stemming from its inability to define ap- tem,itcanbefurtherimprovedwithextensionto
propriatepredicates. Here,insteadofcreatingthe moreflexibleandpowerfullogicsystems. Forex-
predicate EasternWildTurkey, the model gener- ample,statisticalrelationallearning(SRL)systems
atesaconstant,WildTurkey(eastern),inwhich such as Markov logic networks (Richardson and
WildTurkey is the predicate and eastern is the Domingos,2006)andprobabilisticsoftlogic(Bach
constant. Whilethisrepresentationisvalidiniso- et al., 2017) have demonstrated great promise in
lation, it does not interact well with subsequent reasoning under uncertainty and integration with
constants. Thisinconsistencyisarecurringissue ourframeworkwouldenableevenmoreadaptive
inGPT-4’ssymbolicformgeneration,illustrating problem-solving capabilities. Additionally, our
thatthemodelsometimesstrugglestomaintainan method can be extended to reasoning problems
overarching understanding of the problem when requiringcommonsense,whichremainsasignifi-
forminglogicalsymbols. Example3highlightsa cantchallengeastheyoftenrequirereasoningover
case where GPT-4 struggles to interpret specific complexandambiguousrules.
3814

| Limitations |     |     |     |     |     |     | and probabilistic |     | soft | logic. | Journal | of Machine |     |
| ----------- | --- | --- | --- | --- | --- | --- | ----------------- | --- | ---- | ------ | ------- | ---------- | --- |
LearningResearch(JMLR),18(1):1–67.
| We identify | two | main | limitations | of  | LOGIC-LM. |     |     |     |     |     |     |     |     |
| ----------- | --- | ---- | ----------- | --- | --------- | --- | --- | --- | --- | --- | --- | --- | --- |
TomB.Brown,BenjaminMann,NickRyder,Melanie
| First, LOGIC-LM |     | relies | on translating |     | reasoning |     |          |       |         |          |           |     |        |
| --------------- | --- | ------ | -------------- | --- | --------- | --- | -------- | ----- | ------- | -------- | --------- | --- | ------ |
|                 |     |        |                |     |           |     | Subbiah, | Jared | Kaplan, | Prafulla | Dhariwal, |     | Arvind |
problemsintologicalformatsthatcanbetackledby
Neelakantan,PranavShyam,GirishSastry,Amanda
| symbolicsolvers. |     | Asaconsequence,themodel’s |     |     |     |     |         |          |          |     |       |               |     |
| ---------------- | --- | ------------------------- | --- | --- | --- | --- | ------- | -------- | -------- | --- | ----- | ------------- | --- |
|                  |     |                           |     |     |     |     | Askell, | Sandhini | Agarwal, |     | Ariel | Herbert-Voss, |     |
applicabilityisinherentlyboundedbytheexpres- Gretchen Krueger, Tom Henighan, Rewon Child,
|     |     |     |     |     |     |     | Aditya | Ramesh, | Daniel | M.  | Ziegler, | Jeffrey | Wu, |
| --- | --- | --- | --- | --- | --- | --- | ------ | ------- | ------ | --- | -------- | ------- | --- |
sivenessofthesymbolicsolver,forexample,notall
ClemensWinter,ChristopherHesse,MarkChen,Eric
problemscanbeeasilyencodedinfirst-orderlogic.
Sigler,MateuszLitwin,ScottGray,BenjaminChess,
| Nevertheless, |     | this limitation | can | be  | mitigated | by  |             |             |     |         |     |             |     |
| ------------- | --- | --------------- | --- | --- | --------- | --- | ----------- | ----------- | --- | ------- | --- | ----------- | --- |
|               |     |                 |     |     |           |     | Jack Clark, | Christopher |     | Berner, | Sam | McCandlish, |     |
integratingamorediversesetofsymbolicsolvers. Alec Radford, Ilya Sutskever, and Dario Amodei.
|                     |                                  |     |          |                 |     |     | 2020.       | Language | models | are    | few-shot   | learners. | In     |
| ------------------- | -------------------------------- | --- | -------- | --------------- | --- | --- | ----------- | -------- | ------ | ------ | ---------- | --------- | ------ |
| Theflexibledesignof |                                  |     | LOGIC-LM | facilitatesthis |     |     |             |          |        |        |            |           |        |
|                     |                                  |     |          |                 |     |     | Proceedings |          | of the | Annual | Conference | on        | Neural |
| integration.        | Thewiderangeofreasoningtasksthat |     |          |                 |     |     |             |          |        |        |            |           |        |
InformationProcessingSystems(NeurIPS).
| wecaninstantiateour |     |     | LOGIC-LM | frameworkon |     |     |     |     |     |     |     |     |     |
| ------------------- | --- | --- | -------- | ----------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
showsitsgeneralapplicability. Le-Wen Cai, Wang-Zhou Dai, Yu-Xuan Huang, Yu-
|          |          |      |                 |     |            |     | Feng                                           | Li, Stephen | H.       | Muggleton, |             | and Yuan  | Jiang. |
| -------- | -------- | ---- | --------------- | --- | ---------- | --- | ---------------------------------------------- | ----------- | -------- | ---------- | ----------- | --------- | ------ |
| Second,  | LOGIC-LM |      | depends         | on  | in-context |     |                                                |             |          |            |             |           |        |
|          |          |      |                 |     |            |     | 2021.                                          | Abductive   | learning |            | with ground | knowledge |        |
| learning | coupled  | with | self-refinement |     | to convert |     |                                                |             |          |            |             |           |        |
|          |          |      |                 |     |            |     | base. InProceedingsofthe30thInternationalJoint |             |          |            |             |           |        |
anaturallanguage(NL)problemintothesymbolic ConferenceonArtificialIntelligence(IJCAI),pages
| representation. |     | While | this method | has | proven | to  | 1815–1821. |     |     |     |     |     |     |
| --------------- | --- | ----- | ----------- | --- | ------ | --- | ---------- | --- | --- | --- | --- | --- | --- |
beeffective,itmayfacedifficultieswhendealing
|     |     |     |     |     |     |     | Wenhu | Chen, | Xueguang | Ma, | Xinyi | Wang, | and |
| --- | --- | --- | --- | --- | --- | --- | ----- | ----- | -------- | --- | ----- | ----- | --- |
withlogicalrepresentationswithintricategrammar
|     |     |     |     |     |     |     | William | W.  | Cohen. | 2022. | Program | of thoughts |     |
| --- | --- | --- | --- | --- | --- | --- | ------- | --- | ------ | ----- | ------- | ----------- | --- |
structures, such as probabilistic soft logic. This prompting: Disentangling computation from rea-
|                                           |     |            |              |     |         |     | soning          | for numerical |     | reasoning |     | tasks. | CoRR, |
| ----------------------------------------- | --- | ---------- | ------------ | --- | ------- | --- | --------------- | ------------- | --- | --------- | --- | ------ | ----- |
| arises from                               | the | difficulty | in conveying |     | complex |     |                 |               |     |           |     |        |       |
| grammaticalrulestothelanguagemodelthrough |     |            |              |     |         |     | abs/2211.12588. |               |     |           |     |        |       |
alimitednumberofdemonstrationswithinacon-
|     |     |     |     |     |     |     | Xinyun Chen, | Maxwell |     | Lin, | Nathanael | Schärli, | and |
| --- | --- | --- | --- | --- | --- | --- | ------------ | ------- | --- | ---- | --------- | -------- | --- |
strainedcontextsize. Asapotentialsolution,future DennyZhou.2023. Teachinglargelanguagemodels
workscouldexplorethedevelopmentofspecialized toself-debug. CoRR,abs/2304.05128.
modulestoenhancethemappingbetweenNLand
PeterClark,OyvindTafjord,andKyleRichardson.2020.
symbolic language, e.g., fine-tuning LLMs with Transformersassoftreasonersoverlanguage. InPro-
syntheticdatageneratedviasymbolicsolvers. ceedingsofthe29thInternationalJointConference
onArtificialIntelligence(IJCAI),pages3882–3890.
EthicsStatement
WilliamFClocksinandChristopherSMellish.2003.
|     |     |     |     |     |     |     | ProgramminginPROLOG. |     |     |     | SpringerScience&Busi- |     |     |
| --- | --- | --- | --- | --- | --- | --- | -------------------- | --- | --- | --- | --------------------- | --- | --- |
Theuseoflargelanguagemodelsrequiresasignifi-
nessMedia.
cantamountofenergyforcomputationfortraining,
|     |     |     |     |     |     |     | Karl Cobbe, | Vineet | Kosaraju, |     | Mohammad | Bavarian, |     |
| --- | --- | --- | --- | --- | --- | --- | ----------- | ------ | --------- | --- | -------- | --------- | --- |
whichcontributestoglobalwarming(Strubelletal.,
2019). Our work performs few-shot in-context JacobHilton,ReiichiroNakano,ChristopherHesse,
|     |     |     |     |     |     |     | andJohnSchulman.2021. |     |     | Trainingverifierstosolve |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | --------------------- | --- | --- | ------------------------ | --- | --- | --- |
learninginsteadoftrainingmodelsfromscratch,so
|                                    |     |     |     |     |          |     | mathwordproblems. |     |     | CoRR,abs/2110.14168. |     |     |     |
| ---------------------------------- | --- | --- | --- | --- | -------- | --- | ----------------- | --- | --- | -------------------- | --- | --- | --- |
| theenergyfootprintofourworkisless. |     |     |     |     | Thelarge |     |                   |     |     |                      |     |     |     |
languagemodelswhoseAPIweuseforinference, LeonardoMendonçadeMouraandNikolajS.Bjørner.
|     |     |     |     |     |     |     | 2008. | Z3:anefficientSMTsolver. |     |     |     | InProceedingsof |     |
| --- | --- | --- | --- | --- | --- | --- | ----- | ------------------------ | --- | --- | --- | --------------- | --- |
especiallyGPT-4,consumesignificantenergy.
the14thInternationalConferenceofToolsandAlgo-
rithmsfortheConstructionandAnalysisofSystems
Acknowledgements
(TACAS),volume4963ofLectureNotesinComputer
Science,pages337–340.
ThisworkwassupportedbytheNationalScience
LeonardoMendonçadeMoura,SoonhoKong,Jeremy
| FoundationAward#2048122. |     |     | Theviewsexpressed |     |     |     |         |        |            |     |           |     |         |
| ------------------------ | --- | --- | ----------------- | --- | --- | --- | ------- | ------ | ---------- | --- | --------- | --- | ------- |
|                          |     |     |                   |     |     |     | Avigad, | Floris | van Doorn, |     | and Jakob | von | Raumer. |
arethoseoftheauthorsanddonotreflecttheoffi-
|     |     |     |     |     |     |     | 2015. | Theleantheoremprover(systemdescription). |     |     |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | ----- | ---------------------------------------- | --- | --- | --- | --- | --- |
cialpolicyorpositionoftheUSgovernment.
InProceedingsofthe25thInternationalConference
|     |     |     |     |     |     |     | on Automated |     | Deduction | (ICAD), |     | volume | 9195 of |
| --- | --- | --- | --- | --- | --- | --- | ------------ | --- | --------- | ------- | --- | ------ | ------- |
LectureNotesinComputerScience,pages378–388.
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3818

| A   | SyntaxforFirst-orderLogic(FOL) |     |     |     |     |     | C.1 | PrOntoQAPrompts |     |     |     |     |
| --- | ------------------------------ | --- | --- | --- | --- | --- | --- | --------------- | --- | --- | --- | --- |
StandardIn-ContextLearning
Name FOLNotation Context: Jompuses are not shy. Jompuses are yumpuses.
|     |          |     |     |                  |     |     | ( more      | context | here          | )         |              |                |
| --- | -------- | --- | --- | ---------------- | --- | --- | ----------- | ------- | ------------- | --------- | ------------ | -------------- |
|     |          |     |     |                  |     |     | Z·u·m·puses | are     | rompuse·s·.·  | Max       | is a yumpus. |                |
|     | Constant |     |     | lowercaseletters |     |     |             |         |               |           |              |                |
|     |          |     |     |                  |     |     | Question:   | Is      | the following | statement |              | true or false? |
|     | Variable |     |     | x,y,z,           |     |     |             |         |               |           |              |                |
Max is sour.
···
|     | Atom |     |     | P(a | ,     | ,a ) | Options: |     |     |     |     |     |
| --- | ---- | --- | --- | --- | ----- | ---- | -------- | --- | --- | --- | --- | --- |
|     |      |     |     |     | 1 ··· | n    |          |     |     |     |     |     |
A) True
B) False
|     | Negation |     |     |     | P   |     |     |     |     |     |     |     |
| --- | -------- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
¬
|     |     |     |     |     |     |     | The correct |     | option | is: B |     |     |
| --- | --- | --- | --- | --- | --- | --- | ----------- | --- | ------ | ----- | --- | --- |
|     |     |     |     | P   | P   |     |             |     |        |       |     |     |
1 2
|     | Conjunction |     |     |     | ∧       |     |                           |     |       |              |           |                   |
| --- | ----------- | --- | --- | --- | ------- | --- | ------------------------- | --- | ----- | ------------ | --------- | ----------------- |
|     |             |     |     | P   | ,       | , P |                           |     |       |              |           |                   |
|     |             |     |     |     | 1 ∧ ··· | ∧ n | Chain-of-ThoughtPrompting |     |       |              |           |                   |
|     |             |     |     | P   | P       |     |                           |     |       |              |           |                   |
|     |             |     |     |     | 1 2     |     | Task Description:         |     | Given | a problem    | statement | as                |
|     | Disjunction |     |     |     | ∨       |     |                           |     |       |              |           |                   |
|     |             |     |     | P   | ,       | , P | contexts,                 | the | task  | is to answer | a         | logical reasoning |
|     |             |     |     |     | 1 ∨ ··· | ∨ n | question.                 |     |       |              |           |                   |
Implication P 1 P 2 Context: Jompuses are not shy. Jompuses are yumpuses.

|     |             |     |     |     |     |     | ( more      | context | here         | )   |              |     |
| --- | ----------- | --- | --- | --- | --- | --- | ----------- | ------- | ------------ | --- | ------------ | --- |
|     | Equivalence |     |     | P   | P   |     | Z·u·m·puses |         | rompuse·s·.· |     |              |     |
|     |             |     |     |     | 1   | 2   |             | are     |              | Max | is a yumpus. |     |

ExistentialQuantifier xP(x, ) Question: Is the following statement true or false?
|     |                     |     |     | ∃   |       | ··· | Max is   | sour. |     |     |     |     |
| --- | ------------------- | --- | --- | --- | ----- | --- | -------- | ----- | --- | --- | --- | --- |
|     | UniversalQuantifier |     |     |     | xP(x, | )   |          |       |     |     |     |     |
|     |                     |     |     | ∀   |       | ··· | Options: |       |     |     |     |     |
A) True
|     | Table4: |     | First-OrderLogicGrammar. |     |     |     | B) False    |           |                |              |        |              |
| --- | ------- | --- | ------------------------ | --- | --- | --- | ----------- | --------- | -------------- | ------------ | ------ | ------------ |
|     |         |     |                          |     |     |     | Reasoning:  | Max       | is a           | yumpus. Each | yumpus | is a dumpus. |
|     |         |     |                          |     |     |     | ( more      | reasoning | here           | )            |        |              |
|     |         |     |                          |     |     |     | T·u·m·puses | are       | not sour·.··So | Max          | is not | sour.        |
B DatasetStatistics
|     |     |     |     |     |     |     | The correct |     | option | is: B |     |     |
| --- | --- | --- | --- | --- | --- | --- | ----------- | --- | ------ | ----- | --- | --- |
Logic-LM
|     | Dataset |     | Reasoning |     | TestSize | #Opts |     |     |     |     |     |     |
| --- | ------- | --- | --------- | --- | -------- | ----- | --- | --- | --- | --- | --- | --- |
PrOntoQA Deductive 500 2 Task Description: You are given a problem description
|     |     |     |     |     |     |     | and a | question. | The | task is | to: |     |
| --- | --- | --- | --- | --- | --- | --- | ----- | --------- | --- | ------- | --- | --- |
ProofWriter Deductive 600 3 1) define all the predicates in the problem
|     |       |     |     |     |     |     | 2) parse    | the | problem    | into logic | rules | based on |
| --- | ----- | --- | --- | --- | --- | --- | ----------- | --- | ---------- | ---------- | ----- | -------- |
|     | FOLIO |     | FOL |     | 204 | 3   | the defined |     | predicates |            |       |          |
LogicalDeduction CSP 300 3,5,7 3) write all the facts mentioned in the problem
|     |         |     |     |     |     |     | 4) parse    | the     | question     | into       | the logic | form |
| --- | ------- | --- | --- | --- | --- | --- | ----------- | ------- | ------------ | ---------- | --------- | ---- |
|     | AR-LSAT |     | AR  |     | 230 | 5   |             |         |              |            |           |      |
|     |         |     |     |     |     |     | Context:    | Each    | jompus       | is fruity. |           |      |
|     |         |     |     |     |     |     | ( more      | context | here         | )          |           |      |
|     |         |     |     |     |     |     | R·o·m·puses |         | zumpuse·s·.· |            |           |      |
Table5: Statisticsofthelogicalreasoningdatasets. are Alex is a tumpus.
|     |     |     |     |     |     |     | Question: | True | or false: | Alex | is not | shy. |
| --- | --- | --- | --- | --- | --- | --- | --------- | ---- | --------- | ---- | ------ | ---- |
Predicates:
C PromptExamples Jompus(\$x, bool) ::: Does x belong to Jompus?
|     |     |     |     |     |     |     | ( more         | predicates | here      | )       |          |            |
| --- | --- | --- | --- | --- | --- | --- | -------------- | ---------- | --------- | ------- | -------- | ---------- |
|     |     |     |     |     |     |     | Z·u·m·pus(\$x, |            |           | ·D·o·es |          |            |
|     |     |     |     |     |     |     |                |            | bool) ::: |         | x belong | to Zumpus? |
Inthissectionweprovideexamplesoftheprompts
| usedforeachdatasetandmethod. |     |     |     |     | Promptsforstan- |     | Facts:         |     |       |     |     |     |
| ---------------------------- | --- | --- | --- | --- | --------------- | --- | -------------- | --- | ----- | --- | --- | --- |
|                              |     |     |     |     |                 |     | Tumpuses(Alex, |     | True) |     |     |     |
dardin-contextlearningcontain2demonstrations
Rules:
| consisting  |     | of 3                              | parts each: | a   | context, | a question, |                |       |           |             |       |       |
| ----------- | --- | --------------------------------- | ----------- | --- | -------- | ----------- | -------------- | ----- | --------- | ----------- | ----- | ----- |
|             |     |                                   |             |     |          |             | Jompus($x,     |       | True) >>> | Fruity($x,  | True) |       |
|             |     |                                   |             |     |          |             | ( more         | rules | here      | )           |       |       |
| andoptions. |     | Promptsforchain-of-thoughtprompt- |             |     |          |             | D·u·m·pus(\$x, |       | ·>·>·>    |             |       |       |
|             |     |                                   |             |     |          |             |                |       | True)     | Rompus(\$x, |       | True) |
ingcontain2demonstrationsconsistingof5parts
Query:
| each:                                   | ataskdescription,acontext,aquestion,op- |     |     |     |                  |     | Shy(Alex, | False) |     |     |     |     |
| --------------------------------------- | --------------------------------------- | --- | --- | --- | ---------------- | --- | --------- | ------ | --- | --- | --- | --- |
| tions,andachainofreasoning.             |                                         |     |     |     | PromptsforLogic- |     |           |        |     |     |     |     |
| LMcontain2demonstrationswith5partseach: |                                         |     |     |     |                  | a   |           |        |     |     |     |     |
taskdescription,acontext,aquestion,options,and
| adomain-specificsymbolicprogram. |     |     |     |     |     | Forbrevity, |     |     |     |     |     |     |
| -------------------------------- | --- | --- | --- | --- | --- | ----------- | --- | --- | --- | --- | --- | --- |
weshowonlyasingledemonstrationforeachset-
tinginthefollowingsections.
3819

| C.2 ProofWriterPrompts |     |     |     |     |     | Logic-LM |     |     |     |     |     |
| ---------------------- | --- | --- | --- | --- | --- | -------- | --- | --- | --- | --- | --- |
StandardIn-ContextLearning Task Description: You are given a problem description
|     |     |     |     |     |     | and a question. |     | The task | is to: |     |     |
| --- | --- | --- | --- | --- | --- | --------------- | --- | -------- | ------ | --- | --- |
Context: The cow is blue. The cow is round. 1) define all the predicates in the problem
|              |              |           |                    |        |               | 2) parse    | the problem  | into  | logic     | rules | based on    |
| ------------ | ------------ | --------- | ------------------ | ------ | ------------- | ----------- | ------------ | ----- | --------- | ----- | ----------- |
| ( more       | context here |           | )                  |        |               |             |              |       |           |       |             |
| I·f··the cow | is cold      | a·n·d·    | the cow            | visits | the lion then | the defined | predicates   |       |           |       |             |
|              |              |           |                    |        |               | 3) write    | all the      | facts | mentioned | in    | the problem |
| the lion     | sees the     | squirrel. |                    |        |               |             |              |       |           |       |             |
|              |              |           |                    |        |               | 4) parse    | the question |       | into the  | logic | form        |
| Question:    | Based on     | the       | above information, |        | is the        |             |              |       |           |       |             |
following statement true, false, or unknown? Context: Anne is quiet. Erin is furry.
| The tiger | is not | young. |     |     |     | ( more     | context here |           | )   |     |     |
| --------- | ------ | ------ | --- | --- | --- | ---------- | ------------ | --------- | --- | --- | --- |
|           |        |        |     |     |     | A·l·l· red | people are   | y·o·u·ng. |     |     |     |
Options:
| A) True     |        |     |     |     |     | Question:   | Based on  | the    | above information, |     | is the   |
| ----------- | ------ | --- | --- | --- | --- | ----------- | --------- | ------ | ------------------ | --- | -------- |
| B) False    |        |     |     |     |     | following   | statement | true,  | false,             | or  | unknown? |
| C) Unknown  |        |     |     |     |     | Anne is     | white.    |        |                    |     |          |
| The correct | option | is: | B   |     |     | Predicates: |           |        |                    |     |          |
|             |        |     |     |     |     | Quiet($x,   | bool)     | ::: Is | x quiet?           |     |          |
|             |        |     |     |     |     | Furry($x,   | bool)     | ::: Is | x furry?           |     |          |
Chain-of-ThoughtPrompting
|     |     |     |     |     |     | ( more       | predicates | here       | )      |     |     |
| --- | --- | --- | --- | --- | --- | ------------ | ---------- | ---------- | ------ | --- | --- |
|     |     |     |     |     |     | W·h·i·te($x, | bool)      | ::: Is··x· | white? |     |     |
Task Description: Given a problem statement as Young($x, bool) ::: Is x young?
| contexts,    | the task     | is        | to answer          | a logical     | reasoning     |                 |             |               |         |           |                  |
| ------------ | ------------ | --------- | ------------------ | ------------- | ------------- | --------------- | ----------- | ------------- | ------- | --------- | ---------------- |
| question.    |              |           |                    |               |               | Facts:          |             |               |         |           |                  |
|              |              |           |                    |               |               | Quite(Anne,     | True)       | :::           | Anne is | quiet.    |                  |
| Context:     | The cow      | is blue.  | The                | cow is round. |               | ( more          | facts here  | )             |         |           |                  |
|              |              |           |                    |               |               | W·h·i·te(Harry, | True)··:·:: |               |         |           |                  |
| ( more       | context here |           | )                  |               |               |                 |             |               | Harry   | is white. |                  |
| I·f··the cow | is cold      | a·n·d·    | the cow            | visits        | the lion then |                 |             |               |         |           |                  |
| the lion     | sees the     | squirrel. |                    |               |               | Rules:          |             |               |         |           |                  |
|              |              |           |                    |               |               | Young($x,       | True)       | >>> Furry($x, |         | True)     | ::: Young people |
| Question:    | Based on     | the       | above information, |               | is the        | are             | furry.      |               |         |           |                  |
| following    | statement    | true,     | false,             | or            | unknown?      | ( more          | rules here  | )             |         |           |                  |
The tiger is not young. R·e·d·($x, True) >>> ·Y·o·ung($x, True) ::: All red people
|     |     |     |     |     |     | are | young. |     |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | ------ | --- | --- | --- | --- |
Options:
| A) True  |     |     |     |     |     | Query:      |       |     |         |       |     |
| -------- | --- | --- | --- | --- | --- | ----------- | ----- | --- | ------- | ----- | --- |
| B) False |     |     |     |     |     | White(Anne, | True) | ::: | Anne is | white |     |
C) Unknown
| Reasoning:     | The tiger | likes         | the     | cow.   |            |     |     |     |     |     |     |
| -------------- | --------- | ------------- | ------- | ------ | ---------- | --- | --- | --- | --- | --- | --- |
| The tiger      | likes     | the squirrel. |         |        |            |     |     |     |     |     |     |
| ( more         | reasoning | here          | )       |        |            |     |     |     |     |     |     |
| I·f··something | is        | nice ·a·n·d   | it sees | the    | tiger then |     |     |     |     |     |     |
| it is young.   | So        | the tiger     | is      | young. |            |     |     |     |     |     |     |
| The correct    | option    | is:           | B       |        |            |     |     |     |     |     |     |
3820

| C.3 | FOLIOPrompts |     |     |     |     | Logic-LM |     |     |     |     |     |     |
| --- | ------------ | --- | --- | --- | --- | -------- | --- | --- | --- | --- | --- | --- |
StandardIn-ContextLearning Task Description: Given a problem description and a
|     |     |     |     |     |     | question. |     | The task | is to | parse | the problem | and |
| --- | --- | --- | --- | --- | --- | --------- | --- | -------- | ----- | ----- | ----------- | --- |
Context: All people who regularly drink coffee are the question into first-order logic formulas.
dependent on caffeine. The grammar of the first-order logic formula is
| (         | more context | here      | )         |     |              | defined    | as           | follows: |       |       |     |     |
| --------- | ------------ | --------- | --------- | --- | ------------ | ---------- | ------------ | -------- | ----- | ----- | --- | --- |
| I·f··Rina |              | per·s·o·n |           |     |              | 1) logical | conjunction: |          | expr1 | expr2 |     |     |
|           | is           | not a     | dependent | on  | caffeine and |            |              |          |       | ∧     |     |     |
a student, then Rina is either a person dependent 2) logical disjunction: expr1 expr2
disjuncti∨on:
on caffeine and a student, or neither a person 3) logical exclusive expr1 expr2
dependent on caffeine nor a student. 4) logical negation: expr1 ⊕
expr¬2:
|           |       |        |                    |     |        | 5) expr1 | implies |      | expr1           | expr2 |       |     |
| --------- | ----- | ------ | ------------------ | --- | ------ | -------- | ------- | ---- | --------------- | ----- | ----- | --- |
|           |       |        |                    |     |        | 6) expr1 | if and  | only | if expr2:→expr1 |       | expr2 |     |
| Question: | Based | on the | above information, |     | is the |          |         |      |                 |       | ↔x    |     |
following statement true, false, or uncertain? Rina 7) logical universal quantification:
quantification∀:
is a person who jokes about being addicted to 8) logical existential x
caffeine or unaware that caffeine is a drug. Output format: logic form ::: descripti∃on
|     |     |     |     |     |     | Context: | All people | who | regularly | drink | coffee | are |
| --- | --- | --- | --- | --- | --- | -------- | ---------- | --- | --------- | ----- | ------ | --- |
Options:
| A) True  |     |     |     |     |     | dependent | on caffeine. |      |     |     |     |     |
| -------- | --- | --- | --- | --- | --- | --------- | ------------ | ---- | --- | --- | --- | --- |
| B) False |     |     |     |     |     | ( more    | context      | here | )   |     |     |     |
C) Uncertain I·f··Rina is not a per·s·o·n dependent on caffeine and a
|     |         |            |     |     |     | student,    | then        | Rina is    | either         | a person | dependent |     |
| --- | ------- | ---------- | --- | --- | --- | ----------- | ----------- | ---------- | -------------- | -------- | --------- | --- |
|     |         |            |     |     |     | on caffeine | and         | a student, | or             | neither  | a person  |     |
| The | correct | option is: | A   |     |     |             |             |            |                |          |           |     |
|     |         |            |     |     |     | dependent   | on caffeine |            | nor a student. |          |           |     |
Chain-of-ThoughtPrompting Question: Based on the above information, is the
|     |     |     |     |     |     | following | statement | true, | false, | or  | uncertain? |     |
| --- | --- | --- | --- | --- | --- | --------- | --------- | ----- | ------ | --- | ---------- | --- |
Task Description: Given a problem statement as Rina is either a person who jokes about being
contexts, the task is to answer a logical reasoning addicted to caffeine or is unaware that caffeine
| question. |     |              |         |          |      | is a drug.  |     |     |     |     |     |     |
| --------- | --- | ------------ | ------- | -------- | ---- | ----------- | --- | --- | --- | --- | --- | --- |
| Context:  | The | Blake McFall | Company | Building | is a | Predicates: |     |     |     |     |     |     |
commercial warehouse listed on the National Register Dependent(x) ::: x is a person dependent on caffeine
| of Historic |              | Places.  |           |     |     | ( more        | predicates | here   | )          |     |     |     |
| ----------- | ------------ | -------- | --------- | --- | --- | ------------- | ---------- | ------ | ---------- | --- | --- | --- |
| (           | more context | here     | )         |     |     | S·t·u·dent(x) | :::        | x is a | ·s·t·udent |     |     |     |
| J·o·h·n     |              | Em·m·e·t |           |     |     |               |            |        |            |     |     |     |
|             | works        | at the   | Building. |     |     |               |            |        |            |     |     |     |
Premises:
Question: Based on the above information, is the x (Drinks(x) Dependent(x)) ::: All people who
∀ regularly→drink
following statement true, false, or uncertain? coffee are dependent on
| The       | Blake | McFall Company | Building | is  | located in | caffeine.     |                 |                |         |          |            |       |
| --------- | ----- | -------------- | -------- | --- | ---------- | ------------- | --------------- | -------------- | ------- | -------- | ---------- | ----- |
| Portland, |       | Oregon.        |          |     |            | ( more        | premises        | here           | )       |          |            |       |
|           |       |                |          |     |            | ·x··(Jokes(x) |                 | Una·w·a·re(x)) |         |          |            |       |
|           |       |                |          |     |            |               |                 |                |         | ::: No   | one who    | jokes |
| Options:  |       |                |          |     |            | ∀ about       | bei→ng¬addicted |                | to      | caffeine | is unaware |       |
| A) True   |       |                |          |     |            | that          | caffeine        | is             | a drug. |          |            |       |
B) False
| C) Uncertain |     |     |     |     |     | Conclusion: |     |               |     |          |           |     |
| ------------ | --- | --- | --- | --- | --- | ----------- | --- | ------------- | --- | -------- | --------- | --- |
|              |     |     |     |     |     | Jokes(rina) |     | Unaware(rina) |     | ::: Rina | is either | a   |
Reasoning: The Blake McFall Company Building is person w⊕ho jokes about being addicted to
another name for the Emmet Building. caffeine or is unaware that caffeine is a drug.
| (             | more reasoning | here       | )         |     |             |     |     |     |     |     |     |     |
| ------------- | -------------- | ---------- | --------- | --- | ----------- | --- | --- | --- | --- | --- | --- | --- |
| T·h·e·refore, |                |            | ·M·c·Fall |     |             |     |     |     |     |     |     |     |
|               |                | the Blake  | Company   |     | Building is |     |     |     |     |     |     |     |
| located       | in             | Portland,  | Oregon.   |     |             |     |     |     |     |     |     |     |
| The           | correct        | option is: | A         |     |             |     |     |     |     |     |     |     |
3821

| C.4 LogicalDeductionPrompts |     |     |     |     | Logic-LM |     |     |     |
| --------------------------- | --- | --- | --- | --- | -------- | --- | --- | --- |
StandardIn-ContextLearning Task Description: You are given a problem description.
|     |     |     |     |     | The task | is to parse | the problem as | a constraint |
| --- | --- | --- | --- | --- | -------- | ----------- | -------------- | ------------ |
Context: The following paragraphs each describe a satisfaction problem, defining the domain,
set of seven objects arranged in a fixed order. variables, and contraints.
| ( more | context here | )   |     |     |     |     |     |     |
| ------ | ------------ | --- | --- | --- | --- | --- | --- | --- |
E·v·e· A·d·a·. Context: The following paragraphs each describe a
| finished | below | Rob | finished below | Joe. |              |         |               |              |
| -------- | ----- | --- | -------------- | ---- | ------------ | ------- | ------------- | ------------ |
|          |       |     |                |      | set of three | objects | arranged in a | fixed order. |
Question: Which of the following is true? ( more context here )
|     |     |     |     |     | T·h·e· minivan | is newer···than | the convertible. |     |
| --- | --- | --- | --- | --- | -------------- | --------------- | ---------------- | --- |
Options:
|                 |        |     |     |     | Question: | Which of the | following is | true? |
| --------------- | ------ | --- | --- | --- | --------- | ------------ | ------------ | ----- |
| A) Ana finished | third. |     |     |     |           |              |              |       |
| B) Eve finished | third. |     |     |     |           |              |              |       |
| C) Ada finished | third. |     |     |     | Options:  |              |              |       |
D) Dan finished third. A) The station wagon is the second-newest.
E) Rob finished third. B) The convertible is the second-newest.
|                 |        |     |     |     | C) The minivan | is the | second-newest. |     |
| --------------- | ------ | --- | --- | --- | -------------- | ------ | -------------- | --- |
| F) Amy finished | third. |     |     |     |                |        |                |     |
| G) Joe finished | third. |     |     |     |                |        |                |     |
Domain:
| The correct | option is: | A   |     |     | 1: oldest |     |     |     |
| ----------- | ---------- | --- | --- | --- | --------- | --- | --- | --- |
3: newest
Chain-of-ThoughtPrompting
Variables:
|     |     |     |     |     | station\_wagon | [IN] [1, | 2, 3] |     |
| --- | --- | --- | --- | --- | -------------- | -------- | ----- | --- |
Task Description: Given a problem statement as convertible [IN] [1, 2, 3]
| contexts, | the task is | to answer | a logical | reasoning | minivan | [IN] [1, 2, 3] |     |     |
| --------- | ----------- | --------- | --------- | --------- | ------- | -------------- | --- | --- |
question.
Constraints:
Context: The following paragraphs each describe a station\_wagon == 1 ::: The station wagon is the
| set of five | objects | arranged | in a fixed | order. | oldest. |     |     |     |
| ----------- | ------- | -------- | ---------- | ------ | ------- | --- | --- | --- |
( more context here ) minivan > convertible ::: The minivan is newer than
| T·h·e· raven | is the thi·r·d· | from | the left. |     | the                                     | convertible. |     |              |
| ------------ | --------------- | ---- | --------- | --- | --------------------------------------- | ------------ | --- | ------------ |
|              |                 |      |           |     | AllDifferentConstraint([station\_wagon, |              |     | convertible, |
Question: Which of the following is true? minivan]) ::: All vehicles have different
values.
Options:
| A) The quail | is the | rightmost. |     |     | Query: |     |     |     |
| ------------ | ------ | ---------- | --- | --- | ------ | --- | --- | --- |
B) The owl is the rightmost. A) station\_wagon == 2 ::: The station wagon is the
| C) The raven | is the | rightmost. |     |     | second-newest. |     |     |     |
| ------------ | ------ | ---------- | --- | --- | -------------- | --- | --- | --- |
D) The falcon is the rightmost. B) convertible == 2 ::: The convertible is the
| E) The robin | is the | rightmost. |     |     |     |     |     |     |
| ------------ | ------ | ---------- | --- | --- | --- | --- | --- | --- |
second-newest.
|               |                |               |                   |           | C) minivan | == 2 ::: The | minivan is | the second-newest |
| ------------- | -------------- | ------------- | ----------------- | --------- | ---------- | ------------ | ---------- | ----------------- |
| Reasoning:    | The owl is     | the leftmost. | This              | means owl | .          |              |            |                   |
| is not the    | rightmost.     |               |                   |           |            |              |            |                   |
| ( more        | reasoning here | )             |                   |           |            |              |            |                   |
| T·h·i·s means | raven is       | a·l·s·o not   | the rightmost.    | So,       |            |              |            |                   |
| the answer    | is: A) The     | quail         | is the rightmost. |           |            |              |            |                   |
| The correct   | option is:     | A             |                   |           |            |              |            |                   |
3822

| C.5 AR-LSATPrompts |     |     |     |     |     | Logic-LM |     |     |     |     |     |     |
| ------------------ | --- | --- | --- | --- | --- | -------- | --- | --- | --- | --- | --- | --- |
StandardIn-ContextLearning Task Description: You are given a problem description.
|     |     |     |     |     |     | The | task is | to parse | the problem | as a | constraint |     |
| --- | --- | --- | --- | --- | --- | --- | ------- | -------- | ----------- | ---- | ---------- | --- |
Context: During a single week, from Monday through satisfaction problem, defining the domain,
| Friday, | tours      | will        | be conducted | of          | a company's | variables, |          | and contraints. |     |           |         |     |
| ------- | ---------- | ----------- | ------------ | ----------- | ----------- | ---------- | -------- | --------------- | --- | --------- | ------- | --- |
| three   | divisions: | Operations, |              | Production, | and         |            |          |                 |     |           |         |     |
|         |            |             |              |             |             | Context:   | A travel | magazine        | has | hired six | interns | -   |
| Sales.  | Exactly    | five        | tours will   | be          | conducted   |            |          |                 |     |           |         |     |
that week, one each day. ( more context here Farber, Gombarick, Hall, Jackson, Kanze, and
divi·s·i·on
) If the Operations is toured on Lha - to assist in covering three stories:
·T·h·ursday, then the Production division is Romania, Spain, and Tuscany. ( more context here
Tus·c·a·ny.
| toured          | on Friday. |        |           |        |         |     | ) Jackson       | is  | assigned | to  | Kanze | is  |
| --------------- | ---------- | ------ | --------- | ------ | ------- | --- | --------------- | --- | -------- | --- | ----- | --- |
|                 |            |        |           |        |         |     | ·n·o·t assigned | to  | Spain.   |     |       |     |
| Question: Which | one        | of the | following | CANNOT | be true |     |                 |     |          |     |       |     |
of the week's tour schedule? Question: Which one of the following interns CANNOT
|     |     |     |     |     |     |     | be assigned | to  | Tuscany? |     |     |     |
| --- | --- | --- | --- | --- | --- | --- | ----------- | --- | -------- | --- | --- | --- |
Options:
| A) The division | that        | is  | toured | on Monday | is also | Options: |           |     |     |     |     |     |
| --------------- | ----------- | --- | ------ | --------- | ------- | -------- | --------- | --- | --- | --- | --- | --- |
| toured          | on Tuesday. |     |        |           |         | (A)      | Farber    |     |     |     |     |     |
| B) The division | that        | is  | toured | on Monday | is also | (B)      | Gombarick |     |     |     |     |     |
| toured          | on Friday.  |     |        |           |         | (C)      | Hall      |     |     |     |     |     |
(D) Kanze
| C) The division | that         | is  | toured | on Tuesday   | is also |               |     |     |     |     |     |     |
| --------------- | ------------ | --- | ------ | ------------ | ------- | ------------- | --- | --- | --- | --- | --- | --- |
| toured          | on Thursday. |     |        |              |         | (E)           | Lha |     |     |     |     |     |
| D) The division | that         | is  | toured | on Wednesday | is also |               |     |     |     |     |     |     |
| toured          | on Friday.   |     |        |              |         | Declarations: |     |     |     |     |     |     |
E) The division that is toured on Thursday is also stories = EnumSort([Romania, Spain, Tuscany])
|             |            |       |     |     |     | assistants |                         | = EnumSort([photographer, |        |                  | writer]) |     |
| ----------- | ---------- | ----- | --- | --- | --- | ---------- | ----------------------- | ------------------------- | ------ | ---------------- | -------- | --- |
| toured      | on Friday. |       |     |     |     |            |                         |                           |        |                  |          |     |
|             |            |       |     |     |     | (          | more declarations       |                           | here ) |                  |          |     |
|             |            |       |     |     |     | t·r·a·ined | = Function([inte·r·n·s] |                           |        | -> [assistants]) |          |     |
| The correct | option     | is: C |     |     |     |            |                         |                           |        |                  |          |     |
Constraints:
Chain-of-ThoughtPrompting trained(Gombarick) == trained(Lha) ::: Gombarick and
|     |     |     |     |     |     |     | Lha will | be trained | in  | the same | field |     |
| --- | --- | --- | --- | --- | --- | --- | -------- | ---------- | --- | -------- | ----- | --- |
Task Description: Given a problem statement as trained(Farber) != trained(Kanze) ::: Farber and
contexts, the task is to answer a logical reasoning Kanze will be trained in different fields
| question.       |          |     |            |        |         | (                    | more contraints | here | )          |             |     |          |
| --------------- | -------- | --- | ---------- | ------ | ------- | -------------------- | --------------- | ---- | ---------- | ----------- | --- | -------- |
|                 |          |     |            |        |         | a·s·s·igned(Jackson) |                 | ==   | T·u·s·cany | ::: Jackson | is  | assigned |
| Context: During | a single |     | week, from | Monday | through |                      | to Tuscany      |      |            |             |     |          |
Friday, tours will be conducted of a company's assigned(Kanze) != Spain ::: Kanze is not assigned
| three  | divisions: | Operations, |            | Production, | and          |          | to Spain |     |     |     |     |     |
| ------ | ---------- | ----------- | ---------- | ----------- | ------------ | -------- | -------- | --- | --- | --- | --- | --- |
| Sales. | Exactly    | five        | tours will | be          | conducted    |          |          |     |     |     |     |     |
| that   | week, one  | each        | day. (     | more        | context here | Options: |          |     |     |     |     |     |
divi·s·i·on
) If the Operations is toured on is_unsat(assigned(Farber) == Tuscany) ::: (A)
·T·h·ursday, then the Production division is is_unsat(assigned(Gombarick) == Tuscany) ::: (B)
| toured | on Friday. |     |     |     |     |                          |     |     |             |          |         |     |
| ------ | ---------- | --- | --- | --- | --- | ------------------------ | --- | --- | ----------- | -------- | ------- | --- |
|        |            |     |     |     |     | is_unsat(assigned(Hall)  |     |     | == Tuscany) | :::      | (C)     |     |
|        |            |     |     |     |     | is_unsat(assigned(Kanze) |     |     | ==          | Tuscany) | ::: (D) |     |
Question: Which one of the following CANNOT be true is_unsat(assigned(Lha) == Tuscany) ::: (E)
| of the | week's | tour | schedule? |     |     |     |     |     |     |     |     |     |
| ------ | ------ | ---- | --------- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
Options:
A) The division that is toured on Monday is also D ResultInterpreterImplementation
| toured          | on Tuesday.  |     |        |            |         |             |          |        |              |     |          |       |
| --------------- | ------------ | --- | ------ | ---------- | ------- | ----------- | -------- | ------ | ------------ | --- | -------- | ----- |
| B) The division | that         | is  | toured | on Monday  | is also |             |          |        |              |     |          |       |
|                 |              |     |        |            |         | For         | PrOntoQA | and    | ProofWriter, | the | Pyke     | logic |
| toured          | on Friday.   |     |        |            |         |             |          |        |              |     |          |       |
| C) The division | that         | is  | toured | on Tuesday | is also |             |          |        |              |     |          |       |
|                 |              |     |        |            |         | programming |          | engine | returns      | the | inferred | value |
| toured          | on Thursday. |     |        |            |         |             |          |        |              |     |          |       |
D) The division that is toured on Wednesday is also of the variable in the query or Unknown if the
| toured          | on Friday. |     |        |             |         |                                  |        |     |             |     |          |     |
| --------------- | ---------- | --- | ------ | ----------- | ------- | -------------------------------- | ------ | --- | ----------- | --- | -------- | --- |
|                 |            |     |        |             |         | variable                         | cannot | be  | determined. | For | example, | for |
| E) The division | that       | is  | toured | on Thursday | is also |                                  |        |     |             |     |          |     |
| toured          | on Friday. |     |        |             |         |                                  |        |     |             |     |          |     |
|                 |            |     |        |             |         | thequeryConductElectricity(Nail, |        |     |             |     | x),Pyke  |     |
Reasoning: Since Thursday and Friday already have mayreturnx =True. Bycomparingwiththegoal
| tours planned,   | only  | Monday,     | Tuesday | and | Wednesday |           |     |                          |     |     |     |         |
| ---------------- | ----- | ----------- | ------- | --- | --------- | --------- | --- | ------------------------ | --- | --- | --- | ------- |
|                  |       |             |         |     |           |           |     | ConductElectricity(Nail, |     |     |     | False), |
| tours need       | to be | determined. |         |     |           | statement |     |                          |     |     |     |         |
| ( more reasoning | here  |             | )       |     |           |           |     |                          |     |     |     |         |
A··d·ifferent ·i·s· we can know that goal to be proved is False.
|     | division |     | toured | on Thursday. |     |     |     |     |     |     |     |     |
| --- | -------- | --- | ------ | ------------ | --- | --- | --- | --- | --- | --- | --- | --- |
Therefore, the final answer is C. ForFOLIO,theFOLinferenceenginedirectlyre-
turnstheveracitylabelofthegoalasENTAILMENT,
| The correct | option | is: C |     |     |     |                |     |     |             |     |       |        |
| ----------- | ------ | ----- | --- | --- | --- | -------------- | --- | --- | ----------- | --- | ----- | ------ |
|             |        |       |     |     |     | CONTRADICTION, |     | and | CONTINGENT, |     | which | can be |
mappedtoTrue,False,andUnknown,respectively.
|     |     |     |     |     |     | For                                   | LogicalDeduction, |      | the    | solver   | returns       | all the |
| --- | --- | --- | --- | --- | --- | ------------------------------------- | ----------------- | ---- | ------ | -------- | ------------- | ------- |
|     |     |     |     |     |     | possiblevalueassignmentsinanarray.    |                   |      |        |          | Wewrite       |         |
|     |     |     |     |     |     | rules                                 | to parse          | each | option | into the | corresponding |         |
|     |     |     |     |     |     | valueandcheckitisinthegeneratedarray. |                   |      |        |          |               | ForAR-  |
LSAT,weattempttoseparatelyproveeachoption
tofindthecorrectanswer.
|     |     |     |     |     |     | E   | ExampleGenerationsof |     |     | LOGIC-LM |     |     |
| --- | --- | --- | --- | --- | --- | --- | -------------------- | --- | --- | -------- | --- | --- |
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Example 1
Problem: There are six types of wild turkeys: Eastern wild turkey, Osceola wild turkey, Gould's wild turkey, Merriam's wild turkey, Rio Grande
wild turkey, and Ocellated wild turkey. Tom is not an Eastern wild turkey. Tom is not an Osceola wild turkey. Tom is also not a Gould's wild
turkey, or a Merriam's wild turkey, or a Rio Grande wild turkey. Tom is a wild turkey.
Question: Based on the above information, is the following statement true, false, or uncertain? Tom is an Ocellated wild turkey.
(A) True                (B) False            (C) Uncertain
Predicted logic programs:
Premises:
WildTurkey(eastern) ∧ WildTurkey(osceola) ∧ WildTurkey(gould) ∧ WildTurkey(merriams) ∧ WildTurkey(rio_grande) ∧ WildTurkey(ocellated)
→ ∀x (WildTurkey(x) → (OcellatedWildTurkey(x) ∨ EasternWildTurkey(x) ∨ OsceolaWildTurkey(x) ∨ GouldsWildTurkey(x) ∨ MerriamsWildTurkey(x)
∨ RioGrandeWildTurkey(x)))
WildTurkey(tom) ∧ ¬EasternWildTurkey(tom) ∧ ¬OsceolaWildTurkey(tom) ∧ ¬GouldsWildTurkey(tom) ∧ ¬MerriamsWildTurkey(tom) ∧
¬RioGrandeWildTurkey(tom)
Conclusion:
OcellatedWildTurkey(tom)
| Predicted answer:  | C  → A |     |     |
| ------------------ | ------ | --- | --- |
Example 2
Problem: A Japanese game company created the game the Legend of Zelda. All games in the Top 10 list are made by Japanese game companies. If a
game sells more than one million copies, then it will be selected into the Top 10 list. The Legend of Zelda sold more than one million copies.
Question: Based on the above information, is the following statement true, false, or uncertain? The Legend of Zelda is in the Top 10 list.
(A) True                (B) False            (C) Uncertain
Predicted logic programs:
Premises:
JapaneseGameCompany(legend_of_zelda)
∀x (Top10List(x) → JapaneseGameCompany(x))
| ∀x (SellMoreThanOneMillionCopies(x) |     | → Top10List(x)) |     |
| ----------------------------------- | --- | --------------- | --- |
SellMoreThanOneMillionCopies(legend_of_zelda)
Conclusion:
Top10List(legend_of_zelda)
Predicted answer: A
Example 3
Problem: The following paragraphs each describe a set of five objects arranged in a fixed order. The statements are logically consistent within
each paragraph. In a golf tournament, there were five golfers: Rob, Eve, Eli, Amy, and Dan. Dan finished second. Amy finished below Eve. Dan
finished above Eve. Amy finished above Eli.
Question: Which of the following is true?
(A) Rob finished third (B) Eve finished third (C) Eli finished third   (D) Amy finished third    (E) Dan finished third
Predicted logic programs:
| Domain:  | Variables:               |     | Constraints:                                      |
| -------- | ------------------------ | --- | ------------------------------------------------- |
| 1: first | Rob [IN] [1, 2, 3, 4, 5] |     | Dan == 2                                          |
| 5: last  | Eve [IN] [1, 2, 3, 4, 5] |     | Amy > Eve                                         |
|          | Eli [IN] [1, 2, 3, 4, 5] |     | Dan > Eve→ Dan < Eve                              |
|          | Amy [IN] [1, 2, 3, 4, 5] |     | Amy < Eli                                         |
|          | Dan [IN] [1, 2, 3, 4, 5] |     | AllDifferentConstraint([Rob, Eve, Eli, Amy, Dan]) |
Query:
(A) Rob == 3    (B) Eve == 3    (C) Eli == 3    (D) Amy == 3    (E) Dan == 3
| Predicted answer: E | → B |     |     |
| ------------------- | --- | --- | --- |
Example 4
Problem: If the restaurant is listed in Yelp’s recommendations, then the restaurant does not receive many negative reviews. All restaurants with
a rating greater than 9 are listed in Yelp’s recommendations. Some restaurants that do not provide take-out service receive many negative
reviews. All restaurants that are popular among local residents have ratings greater than 9. Subway has a rating greater than 9 or is popular
among local residents.
Question: Based on the above information, is the following statement true, false, or uncertain? Subway provides take-out service and does not
receive many negative reviews.
(A) True                (B) False            (C) Uncertain
Predicted logic programs:
Premises:
∀x (Listed(x) → ¬NegativeReviews(x))
| ∀x (Rating(x, y) ∧               | y > 9 → Listed(x))      | → ∀x (GreaterThanNine(x) → Listed(x))          |                 |
| -------------------------------- | ----------------------- | ---------------------------------------------- | --------------- |
| ∃x (¬TakeOut(x) ∧                | NegativeReviews(x))     |                                                |                 |
| ∀x (Popular(x) → (Rating(x, y) ∧ |                         | y > 9)) → ∀x (Popular(x) → GreaterThanNine(x)) |                 |
| Rating(subway, y) ∧              | y > 9 ∨ Popular(subway) | → GreaterThanNine(subway) ∨                    | Popular(subway) |
Conclusion:
| TakeOut(subway) ∧  | ¬NegativeReviews(subway) |     |     |
| ------------------ | ------------------------ | --- | --- |
| Predicted answer:  | C  → A                   |     |     |
Figure6: Examplesofgeneratedsymbolicrepresentationsandpredictedanswers. Theincorrectsegment(s)and
theircorrespondenceintheproblemaremarkedinred,andthecorrectrevisionsaremarkedingreen.
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