IfQA: A Dataset for Open-domain Question Answering under Counterfactual Presuppositions Wenhao Yu author Meng Jiang author Peter Clark author Ashish Sabharwal author 2023-12 text Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing Houda Bouamor editor Juan Pino editor Kalika Bali editor Association for Computational Linguistics Singapore conference publication yu-etal-2023-ifqa 10.18653/v1/2023.emnlp-main.515 https://aclanthology.org/2023.emnlp-main.515/ 2023-12 8276 8288