A Survey on Open Information Extraction Christina Niklaus author Matthias Cetto author André Freitas author Siegfried Handschuh author 2018-08 text Proceedings of the 27th International Conference on Computational Linguistics Emily M Bender editor Leon Derczynski editor Pierre Isabelle editor Association for Computational Linguistics Santa Fe, New Mexico, USA conference publication niklaus-etal-2018-survey https://aclanthology.org/C18-1326/ 2018-08 3866 3878