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 "citation": "@misc{kirichenko2025abstentionbenchreasoningllmsfail,\n      title={AbstentionBench: Reasoning LLMs Fail on Unanswerable Questions},\n      author={Polina Kirichenko and Mark Ibrahim and Kamalika Chaudhuri and Samuel J. Bell},\n      year={2025},\n      eprint={2506.09038},\n      archivePrefix={arXiv},\n      primaryClass={cs.AI},\n      url={https://arxiv.org/abs/2506.09038},\n}",
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