Does It Happen? Multi-hop Path Structures for Event Factuality Prediction with Graph Transformer Networks Duong Le author Thien Huu Nguyen author 2021-11 text Proceedings of the Seventh Workshop on Noisy User-generated Text (W-NUT 2021) Wei Xu editor Alan Ritter editor Tim Baldwin editor Afshin Rahimi editor Association for Computational Linguistics Online conference publication le-nguyen-2021-happen 10.18653/v1/2021.wnut-1.6 https://aclanthology.org/2021.wnut-1.6/ 2021-11 46 55