Trigger is Not Sufficient: Exploiting Frame-aware Knowledge for Implicit Event Argument Extraction Kaiwen Wei author Xian Sun author Zequn Zhang author Jingyuan Zhang author Guo Zhi author Li Jin author 2021-08 text Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Chengqing Zong editor Fei Xia editor Wenjie Li editor Roberto Navigli editor Association for Computational Linguistics Online conference publication wei-etal-2021-trigger 10.18653/v1/2021.acl-long.360 https://aclanthology.org/2021.acl-long.360/ 2021-08 4672 4682