Evaluating Cultural Knowledge and Reasoning in LLMs Through Persian Allusions

Melika Nobakhtian, Yadollah Yaghoobzadeh, Mohammad Taher Pilehvar


Abstract
Allusion recognition—a task demanding contextual activation of cultural knowledge—serves as a critical test of LLMs’ ability to deploy stored information in open-ended, figurative settings. We introduce a framework for evaluating Persian literary allusions through (1) classical poetry annotations and (2) LLM-generated texts incorporating allusions in novel contexts. By combining knowledge assessments, multiple-choice tasks, and open-ended recognition, we analyze whether failures stem from knowledge gaps or activation challenges. Evaluations across eleven LLMs highlight a notable observation: models exhibit strong foundational knowledge and high multiple-choice accuracy, yet performance drops substantially in open-ended tasks, especially for indirect references. Reasoning-optimized models generalize better to novel contexts, whereas distilled models show marked degradation in cultural reasoning. The gap underscores that LLMs’ limitations arise not from missing knowledge but from difficulties in spontaneously activating cultural references without explicit cues. We propose allusion recognition as a benchmark for contextual knowledge deployment, highlighting the need for training paradigms that bridge factual recall and culturally grounded reasoning. Our code, datasets and results are available at https://github.com/MelikaNobakhtian/Allusion
Anthology ID:
2025.findings-emnlp.1403
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2025
Month:
November
Year:
2025
Address:
Suzhou, China
Editors:
Christos Christodoulopoulos, Tanmoy Chakraborty, Carolyn Rose, Violet Peng
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
25725–25737
Language:
URL:
https://aclanthology.org/2025.findings-emnlp.1403/
DOI:
Bibkey:
Cite (ACL):
Melika Nobakhtian, Yadollah Yaghoobzadeh, and Mohammad Taher Pilehvar. 2025. Evaluating Cultural Knowledge and Reasoning in LLMs Through Persian Allusions. In Findings of the Association for Computational Linguistics: EMNLP 2025, pages 25725–25737, Suzhou, China. Association for Computational Linguistics.
Cite (Informal):
Evaluating Cultural Knowledge and Reasoning in LLMs Through Persian Allusions (Nobakhtian et al., Findings 2025)
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https://aclanthology.org/2025.findings-emnlp.1403.pdf
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