README.md

metadata

license: cc-by-4.0
arxiv: arxiv.org/abs/2606.02837

Data from the paper "Fixing FOLIO and MALLS: Verified Annotations and an LLM-assisted Framework to Focus Human Relabeling" (https://arxiv.org/pdf/2606.02837)

FOLIO — Curated Pairs and Signatures

Curated FOLIO instances (validation split) for evaluating LLM-based first-order-logic (FOL) formula curation. Each instance pairs a natural-language sentence with the original FOL formalization (FOL_sentence_old) and a curated reference (FOL_sentence), grouped by story; NLI labels (True, False or Unknown) are corrected and provided in this curated version for each conclusion. per-story ontologies (signatures) are provided separately.

Configurations

FOLIO_instances — FOLIO_instances.jsonl

275 instances used for held-out evaluation.

Field	Type	Description
id	string	Instance id (e.g. story_380, concl_380_1)
NL_sentence	string	Natural-language sentence
FOL_sentence	string	Curated reference FOL formalization
FOL_sentence_old	string	Original (pre-curation) FOL formalization
corrected	bool	Whether the original was corrected
ambiguity	bool	Whether the sentence is ambiguous
ambiguity_explanation	string	Rationale for the ambiguity flag (when applicable)
correction_explanation	string	Rationale for the correction (selection only)
label	string	Gold NLI label for the curated formula (FOL_sentence).
label_z3	string	Z3-derived NLI label for the curated formula.
label_old	string	Original NLI label from the original formula (FOL_sentence_old).
label_old_z3	string	Z3-derived NLI label for the original formula.

labelled signature — FOLIO_ontology.jsonl

Per-story ontology used to render vocabulary blocks in prompts and to type-check formulas. One JSON object per line, 73 stories.

Field	Type	Description
story_id	int	Story id (matches the *_{story_id} suffix in rawpairs_*.id)
Rel	object	{predicate_name → {arity, pos_meaning, neg_meaning}}
Const	object	{constant_name → description}

FOL syntax

Unicode operators:

• Quantifiers: ∀, ∃
• Boolean: ¬, ∧, ∨, →, ↔, ⊕
• Predicates: capitalized (e.g. Human(x))
• Variables: lowercase; constants: capitalized

Citation

If you want to cite the full work or use the dataset, please refer to https://arxiv.org/pdf/2606.02837

@misc{brunello2026fixingfoliomallsverified,
      title={Fixing FOLIO and MALLS: Verified Annotations and an LLM-assisted Framework to Focus Human Relabeling}, 
      author={Andrea Brunello and Cristian Curaba and Luca Geatti and Michele Mignani and Angelo Montanari and Nicola Saccomanno},
      year={2026},
      eprint={2606.02837},
      archivePrefix={arXiv},
      primaryClass={cs.CL},
      url={https://arxiv.org/abs/2606.02837}, 
}