Are LLMs Good for Semantic Role Labeling via Question Answering?: A Preliminary Analysis

Ritwik Raghav, Abhik Jana


Abstract
Semantic role labeling (SRL) is a fundamental task in natural language processing that is crucial for achieving deep semantic understanding. Despite the success of large language models (LLMs) in several downstream NLP tasks, key tasks such as SRL remain a challenge for LLMs. Hence, in this study, we attempt to instantiate the efficacy of LLMs for the task of SRL via Question answering. Toward that goal, we investigate the effectiveness of five different LLMs (Llama, Mistral, Qwen, OpenChat, Gemini) using zero-shot and few-shot prompting. Our findings indicate that few-shot prompting enhances the performance of all models. Although Gemini outperformed others by a margin of 11%, Qwen and Llama are not too far behind. Additionally, we conduct a comprehensive error analysis to shed light on the cases where LLMs fail. This study offers valuable insights into the performance of LLMs for structured prediction and the effectiveness of simple prompting techniques in the Question-Answering framework for SRL.
Anthology ID:
2025.ijcnlp-srw.21
Volume:
The 14th International Joint Conference on Natural Language Processing and The 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics
Month:
December
Year:
2025
Address:
Mumbai, India
Editors:
Santosh T.y.s.s, Shuichiro Shimizu, Yifan Gong
Venue:
IJCNLP
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Publisher:
Association for Computational Linguistics
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Pages:
253–258
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URL:
https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-srw.21/
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Cite (ACL):
Ritwik Raghav and Abhik Jana. 2025. Are LLMs Good for Semantic Role Labeling via Question Answering?: A Preliminary Analysis. In The 14th International Joint Conference on Natural Language Processing and The 4th Conference of the Asia-Pacific Chapter of the Association for Computational Linguistics, pages 253–258, Mumbai, India. Association for Computational Linguistics.
Cite (Informal):
Are LLMs Good for Semantic Role Labeling via Question Answering?: A Preliminary Analysis (Raghav & Jana, IJCNLP 2025)
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https://preview.aclanthology.org/ingest-ijcnlp-aacl/2025.ijcnlp-srw.21.pdf