About: http://webisa.webdatacommons.org/81610115

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	An object, however, is a reference to blessed data, so if $a and $b are objects then the assignment $a = $b copies only the reference, leaving $a and $b referring to the same object data.
http://www.w3.org/ns/prov#wasQuotedFrom	metacpan.org