Zhou, Yang, Yubo Chen, Jun Zhao, Yin Wu, Jiexin Xu, and Jinlong Li. “What the Role Is Vs. What Plays the Role: Semi-Supervised Event Argument Extraction via Dual Question Answering”. Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 16 (May 18, 2021): 14638–14646. Accessed May 29, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/17720.