About: http://webisa.webdatacommons.org/144324964

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	A groupoid is precisely a category in which every morphism is an isomorphism.
http://www.w3.org/ns/prov#wasQuotedFrom	ncatlab.org