TVQA+: Spatio-Temporal Grounding for Video Question Answering Jie Lei author Licheng Yu author Tamara Berg author Mohit Bansal 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 lei-etal-2020-tvqa 10.18653/v1/2020.acl-main.730 https://aclanthology.org/2020.acl-main.730/ 2020-07 8211 8225