Grounded information has been extensively used in various NLP tasks to represent real-world knowledge (Niles and Pease, 2003;Gruber, 1993;Guarino, 1998;de Bruijn et al., 2006;Paulheim, 2017) .
early question answering systems used expert-crafted ontologies in order to endow these systems with common knowledge (Harabagiu et al., 2005;Xu et al., 2016).