---
license: mit
configs:
  - config_name: default
    data_files:
      - split: OmanicSynth
        path: OmanicSynth.jsonl
      - split: OmanicBench
        path: OmanicBench.jsonl
---

# Omanic


The dataset contains two splits:

- `OmanicSynth`: 10,296 machine-generated training examples.
- `OmanicBench`: 967 expert-reviewed, human-annotated evaluation examples.

Each row is a single 4-hop reasoning instance.


For more details, please refer to the paper: [Omanic: Towards Step-wise Evaluation of Multi-hop Reasoning in Large Language Models](https://arxiv.org/abs/2603.16654).



## Data Fields

Each example contains the following top-level keys:

- `id`: A unique example identifier.
- `single_hop`: A list of decomposed single-hop sub-questions that form the reasoning chain. In Omanic, this chain is typically 4 hops long.
- `multi_hop_question`: The final multi-hop question.
- `multi_hop_answer`: The gold final answer to the multi-hop question.
- `multiple_choice_options`: The final answer options for the multi-hop question. In the Omanic, these are the same as the options for the last single-hop question.
- `correct_answer_label`: The correct option label for the final multi-hop question, typically one of `A`, `B`, `C`, or `D`.
- `motif_type`: The reasoning graph topology of the multi_hop_question. Common values include `Bridge`, `Chain`, and `Converging`.
  - `Bridge`: the answer to `Step1` must appear in the question for `Step2`, and the answers to `Step2` and `Step3` must both appear in the question for `Step4`.
  - `Chain`: each step's question must contain the answer from the immediately preceding step.
  - `Converging`: the answers to `Step1` and `Step2` must both appear in the question for `Step3`, and the answer to `Step3` must appear in the question for `Step4`.
  
  Here, `StepX` refers to the X-th sub-question in `single_hop`.


### `single_hop`

`single_hop` is a list of 4 sinle-hop questions. Each element describes one intermediate reasoning step and typically contains:

- `question`: The single-hop sub-question for this reasoning step.
- `answer`: The gold answer to this sub-question.
- `multiple_choice_options`: The multiple-choice options for this hop.
- `correct_answer_label`: The correct option label for this hop.
- `domain`: The semantic domain assigned to this hop, such as history, science, economics, or culture. This element is present for every hop except the first one.



## Example Schema

```json
{
  "id": "551573_631365_53191",
  "single_hop": [
    {
      "question": "Who is the author of Candida?",
      "answer": "George Bernard Shaw",
      "multiple_choice_options": {
        "A": "Anton Chekhov",
        "B": "Henrik Ibsen",
        "C": "George Bernard Shaw",
        "D": "Oscar Wilde"
      },
      "correct_answer_label": "C"
    },
    {
      "question": "What is the country of citizenship of George Bernard Shaw?",
      "answer": "Ireland",
      "multiple_choice_options": {
        "A": "Scotland",
        "B": "England",
        "C": "Ireland",
        "D": "United Kingdom"
      },
      "correct_answer_label": "C",
      "domain": "History and Literature"
    },
    {
      "question": "How many distinct 3-member committees can be formed from a group of 7 candidates?",
      "answer": "35",
      "multiple_choice_options": {
        "A": "21",
        "B": "35",
        "C": "42",
        "D": "28"
      },
      "correct_answer_label": "B",
      "domain": "Mathematics and Logic"
    },
    {
      "question": "In Ireland, which political party was founded 35 years before 1968?",
      "answer": "Fine Gael",
      "multiple_choice_options": {
        "A": "Fine Gael",
        "B": "Labour Party",
        "C": "Fianna Fáil",
        "D": "Sinn Féin"
      },
      "correct_answer_label": "A",
      "domain": "History and Literature"
    }
  ],
  "multi_hop_question": "In the country of citizenship of the author of Candida, which political party was founded the same number of years before 1968 as the number of distinct 3-member committees that can be formed from a group of 7 candidates?",
  "multi_hop_answer": "Fine Gael",
  "multiple_choice_options": {
    "A": "Fine Gael",
    "B": "Labour Party",
    "C": "Fianna Fáil",
    "D": "Sinn Féin"
  },
  "correct_answer_label": "A",
  "motif_type": "Chain"
}
```

## Contact

For any inquiries, please reach out at **peettherapynoys@gmail.com**

## Citation

If you find Omanic useful for your research and applications, please cite:

```bibtex
@article{gu2026omanic,
  title={Omanic: Towards Step-wise Evaluation of Multi-hop Reasoning in Large Language Models},
  author={Gu, Xiaojie and Tong, Sherry T and Feng, Aosong and Han, Sophia Simeng and Lu, Jinghui and Chen, Yingjian and Iwasawa, Yusuke and Matsuo, Yutaka and Park, Chanjun and Ying, Rex and Li, Irene},
  journal={arXiv preprint arXiv:2603.16654},
  year={2026}
}
```