About: http://webisa.webdatacommons.org/180741833

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	When the return type is an Object , it is upto you to return null depends on the scenario.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com