About: http://webisa.webdatacommons.org/71380065

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	Secondly Return types may or may not change.Instead try this for first example.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com