<http://purl.obolibrary.org/obo/CHEBI_50594> <http://www.w3.org/2007/05/powder-s#describedby> <https://covidontheweb.inria.fr:4443/about/id/entity/http/purl.obolibrary.org/obo/envo.owl> . <http://purl.obolibrary.org/obo/CHEBI_50594> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://purl.obolibrary.org/obo/CHEBI_50812> . <http://purl.obolibrary.org/obo/CHEBI_50594> <http://www.w3.org/2000/01/rdf-schema#label> "carbon nanotube" . <http://purl.obolibrary.org/obo/CHEBI_50594> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/2002/07/owl#Class> . <http://purl.obolibrary.org/obo/CHEBI_50594> <http://www.w3.org/2000/01/rdf-schema#subClassOf> <http://purl.obolibrary.org/obo/CHEBI_50796> .