About: http://webisa.webdatacommons.org/141642503

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	my guess on your 3, without reading anything except the names or having a very good clue:
http://www.w3.org/ns/prov#wasQuotedFrom	gas2.org