Fei, H., M. Zhang, B. Li, and D. Ji. “End-to-End Semantic Role Labeling With Neural Transition-Based Model”. Proceedings of the AAAI Conference on Artificial Intelligence, vol. 35, no. 14, May 2021, pp. 12803-11, https://ojs.aaai.org/index.php/AAAI/article/view/17515.