Alexandre Tessarollo author Alexandre Rademaker author 2020-may text English eng The European Language Resources Association (ELRA) Marseille, France conference publication 979-10-95546-41-2 We extend the Open WordNet for English (OWN-EN) with rock-related and other lithological terms using the authoritative source of GBA’s Thesaurus. Our aim is to improve WordNet to better function within Oil & Gas domain, particularly geoscience texts. We use a three step approach: a proof of concept-level extension of WordNet, a major extension on which we evaluate the impact with positive results and a full extension encompassing all GBA’s lithological terms. We also build a mapping to GBA which also links to several other resources: WikiData, British Geological Survey, Inspire, GeoSciML and DBpedia. tessarollo-rademaker-2020-inclusion https://www.aclweb.org/anthology/2020.mmw-1.6 2020-may 33 38