Event-Centric Question Answering via Contrastive Learning and Invertible Event Transformation Junru Lu author Xingwei Tan author Gabriele Pergola author Lin Gui author Yulan He author 2022-12 text Findings of the Association for Computational Linguistics: EMNLP 2022 Yoav Goldberg editor Zornitsa Kozareva editor Yue Zhang editor Association for Computational Linguistics Abu Dhabi, United Arab Emirates conference publication lu-etal-2022-event 10.18653/v1/2022.findings-emnlp.176 https://aclanthology.org/2022.findings-emnlp.176/ 2022-12 2377 2389