Unsupervised Natural Question Answering with a Small Model Martin Andrews author Sam Witteveen author 2019-11 text Proceedings of the Second Workshop on Fact Extraction and VERification (FEVER) James Thorne editor Andreas Vlachos editor Oana Cocarascu editor Christos Christodoulopoulos editor Arpit Mittal editor Association for Computational Linguistics Hong Kong, China conference publication andrews-witteveen-2019-unsupervised 10.18653/v1/D19-6606 https://aclanthology.org/D19-6606/ 2019-11 34 38