Answering Elementary Science Questions by Constructing Coherent Scenes using Background Knowledge Yang Li author Peter Clark author 2015-09 text Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing Lluís Màrquez editor Chris Callison-Burch editor Jian Su editor Association for Computational Linguistics Lisbon, Portugal conference publication li-clark-2015-answering 10.18653/v1/D15-1236 https://aclanthology.org/D15-1236/ 2015-09 2007 2012