Knowledge-enriched, Type-constrained and Grammar-guided Question Generation over Knowledge Bases Sheng Bi author Xiya Cheng author Yuan-Fang Li author Yongzhen Wang author Guilin Qi author 2020-12 text Proceedings of the 28th International Conference on Computational Linguistics Donia Scott editor Nuria Bel editor Chengqing Zong editor International Committee on Computational Linguistics Barcelona, Spain (Online) conference publication bi-etal-2020-knowledge 10.18653/v1/2020.coling-main.250 https://aclanthology.org/2020.coling-main.250/ 2020-12 2776 2786