About: http://webisa.webdatacommons.org/40998554

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	His main point is that references should not be used as 'output' parameters because at the call site there is no indication of whether the parameter is a reference or a value parameter.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com