About: http://webisa.webdatacommons.org/229002936

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	I am especially interested in the case if one of the morphisms is empty, e.g. is the morphism from an empty set to an empty set.
http://www.w3.org/ns/prov#wasQuotedFrom	stackexchange.com