About: http://webisa.webdatacommons.org/177098539

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	Unfortunately, with pointers, there is no check the chamber to see if it is loaded, so no real good way to figure out if the a pointer is valid, other than if it does not cause an hardware fault, it is valid.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com