<http://webisa.webdatacommons.org/386989466> <http://www.w3.org/ns/prov#value> "(OPCs) are a group of flavonoids found in pine bark, grape seed, and other plant sources." . <http://webisa.webdatacommons.org/prov/309818719> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/386989466> . <http://webisa.webdatacommons.org/386989466> <http://www.w3.org/ns/prov#wasQuotedFrom> <peacehealth.org> . <http://webisa.webdatacommons.org/386989466> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/prov#Entity> . <http://webisa.webdatacommons.org/prov/306934112> <http://www.w3.org/ns/prov#wasDerivedFrom> <http://webisa.webdatacommons.org/386989466> .