ExCAR: Event Graph Knowledge Enhanced Explainable Causal Reasoning Li Du author Xiao Ding author Kai Xiong author Ting Liu author Bing Qin 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 du-etal-2021-excar 10.18653/v1/2021.acl-long.183 https://aclanthology.org/2021.acl-long.183/ 2021-08 2354 2363