About: http://webisa.webdatacommons.org/201610792

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	should use err and check against -1, no point continuing if there is an error.
http://www.w3.org/ns/prov#wasQuotedFrom	netbsd.org