Open Relation Extraction and Grounding Dian Yu author Lifu Huang author Heng Ji author 2017-11 text Proceedings of the Eighth International Joint Conference on Natural Language Processing (Volume 1: Long Papers) Greg Kondrak editor Taro Watanabe editor Asian Federation of Natural Language Processing Taipei, Taiwan conference publication yu-etal-2017-open https://aclanthology.org/I17-1086/ 2017-11 854 864