Graphene: Semantically-Linked Propositions in Open Information Extraction Matthias Cetto author Christina Niklaus 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 cetto-etal-2018-graphene https://aclanthology.org/C18-1195/ 2018-08 2300 2311