“Who said it, and Why?” Provenance for Natural Language Claims Yi Zhang author Zachary Ives author Dan Roth author 2020-07 text Proceedings of the 58th Annual Meeting of the Association for Computational Linguistics Dan Jurafsky editor Joyce Chai editor Natalie Schluter editor Joel Tetreault editor Association for Computational Linguistics Online conference publication zhang-etal-2020-said 10.18653/v1/2020.acl-main.406 https://aclanthology.org/2020.acl-main.406/ 2020-07 4416 4426