Systems vary from operating on structured knowledge bases [Bordes et al., 2014b] ; [Bordes et al., 2014a ] to semi-structured tables<cite> [Pasupat and Liang, 2015]</cite> ,<cite> [Neelakantan et al., 2016]</cite> , [Jauhar et al., 2016] and completely unstructured text, which is related to information extraction [Clark et al., 2016] . We focus on semi-structured tables that face the trade-off between degree of structure and ubiquity.