Data Catalog Vocabulary (DCAT) CHEMROF Source
https://w3id.org/chemrof/ClassificationLevelEnum#Class http://www.w3.org/2000/01/rdf-schema#Class LOOM
https://w3id.org/chemrof/Collection http://www.w3.org/ns/prov#Collection LOOM
https://w3id.org/chemrof/Location http://www.w3.org/ns/prov#Location LOOM
https://w3id.org/chemrof/Collection http://www.w3.org/2004/02/skos/core#Collection LOOM
https://w3id.org/chemrof/Location http://purl.org/dc/terms/Location LOOM