About: http://webisa.webdatacommons.org/113482447

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	This simply means that there is not a value or placeholder of whatever you are trying to access, here is an example:
http://www.w3.org/ns/prov#wasQuotedFrom	dreamincode.net