@inproceedings{xu-etal-2013-open, title = "Open Information Extraction with Tree Kernels", author = "Xu, Ying and Kim, Mi-Young and Quinn, Kevin and Goebel, Randy and Barbosa, Denilson", editor = "Vanderwende, Lucy and Daum{\'e} III, Hal and Kirchhoff, Katrin", booktitle = "Proceedings of the 2013 Conference of the North {A}merican Chapter of the Association for Computational Linguistics: Human Language Technologies", month = jun, year = "2013", address = "Atlanta, Georgia", publisher = "Association for Computational Linguistics", url = "https://aclanthology.org/N13-1107/", pages = "868--877" }