About: http://webisa.webdatacommons.org/275186297

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 would argue that using null for indicating something other than the lack
http://www.w3.org/ns/prov#wasQuotedFrom	dlang.org