: BFO_0000050http://purl.obolibrary.org/obo/ Create a prefix for http://purl.obolibrary.org/obo/ Hit Enter to save Double click to create a prefix | : IAO_0000115http://purl.obolibrary.org/obo/ Create a prefix for http://purl.obolibrary.org/obo/ Hit Enter to save Double click to create a prefix | a core relation that holds between a part and its whole @en | graph:default |