About: http://webisa.webdatacommons.org/312549221

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	The only benefit I can see to code organised like this is if you wanted to easily change the namespace of your classes at a later date by passing in an argument other than window.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com