Reveal-Bangla: A Dataset for Cross-Lingual Multi-Step Reasoning Evaluation

Khondoker Ittehadul Islam, Gabriele Sarti


Abstract
Language models have demonstrated remarkable performance on complex multi-step reasoning tasks. However, their evaluation has been predominantly confined to high-resource languages such as English. In this paper, we introduce a manually translated Bangla multi-step reasoning dataset derived from the English Reveal dataset, featuring both binary and non-binary question types. We conduct a controlled evaluation of English-centric and Bangla-centric multilingual small language models on the original dataset and our translated version to compare their ability to exploit relevant reasoning steps to produce correct answers. Our results show that, in comparable settings, reasoning context is beneficial for more challenging non-binary questions, but models struggle to employ relevant Bangla reasoning steps effectively. We conclude by exploring how reasoning steps contribute to models’ predictions, highlighting different trends across models and languages.
Anthology ID:
2025.banglalp-1.3
Volume:
Proceedings of the Second Workshop on Bangla Language Processing (BLP-2025)
Month:
December
Year:
2025
Address:
Mumbai, India
Editors:
Firoj Alam, Sudipta Kar, Shammur Absar Chowdhury, Naeemul Hassan, Enamul Hoque Prince, Mohiuddin Tasnim, Md Rashad Al Hasan Rony, Md Tahmid Rahman Rahman
Venues:
BanglaLP | WS
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
31–43
Language:
URL:
https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.banglalp-1.3/
DOI:
Bibkey:
Cite (ACL):
Khondoker Ittehadul Islam and Gabriele Sarti. 2025. Reveal-Bangla: A Dataset for Cross-Lingual Multi-Step Reasoning Evaluation. In Proceedings of the Second Workshop on Bangla Language Processing (BLP-2025), pages 31–43, Mumbai, India. Association for Computational Linguistics.
Cite (Informal):
Reveal-Bangla: A Dataset for Cross-Lingual Multi-Step Reasoning Evaluation (Islam & Sarti, BanglaLP 2025)
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PDF:
https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.banglalp-1.3.pdf