1. Androutsopoulos, I., Ritchie, G.D., Thanisch, P.: Natural language interfaces to databases-an introduction. Nat. Lang. Eng. 1(1), 29–81 (1995)
2. Berant, J., Chou, A., Frostig, R., Liang, P.: Semantic parsing on freebase from question-answer pairs. In: Proceedings of EMNLP (2013)
3. Bordes, A., Chopra, S., Weston, J.: Question answering with subgraph embeddings. Comput. Sci. (2014)
4. Chen, D., Fisch, A., Weston, J., Bordes, A.: Reading Wikipedia to answer open-domain questions, pp. 1870–1879 (2017)
5. Chu-Carroll, J., Fan, J.: Leveraging Wikipedia characteristics for search and candidate generation in question answering. In: AAAI Conference on Artificial Intelligence, pp. 872–877 (2011)