KrakeN: N-ary Facts in Open Information Extraction Alan Akbik author Alexander Löser author 2012-06 text Proceedings of the Joint Workshop on Automatic Knowledge Base Construction and Web-scale Knowledge Extraction (AKBC-WEKEX) James Fan editor Raphael Hoffman editor Aditya Kalyanpur editor Sebastian Riedel editor Fabian Suchanek editor Partha Pratim Talukdar editor Association for Computational Linguistics Montréal, Canada conference publication akbik-loser-2012-kraken https://aclanthology.org/W12-3010/ 2012-06 52 56