About: http://webisa.webdatacommons.org/24157572

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 personally always use require_once, I find in most cases it is what you need (either you get the page once or you halt the script).
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com