About: http://webisa.webdatacommons.org/199555259

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	A NULL pointer is a pointer to location 0x00, that is, no location.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com