About: http://webisa.webdatacommons.org/22925821

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	This method allows you to temporarily alter whether a field is required or not.
http://www.w3.org/ns/prov#wasQuotedFrom	metacpan.org