Sun, Yawei, Lingling Zhang, Gong Cheng, and Yuzhong Qu. “SPARQA: Skeleton-Based Semantic Parsing for Complex Questions over Knowledge Bases”. Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 05 (April 3, 2020): 8952-8959. Accessed March 5, 2021. https://ojs.aaai.org/index.php/AAAI/article/view/6426.