About: http://webisa.webdatacommons.org/398080103

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	Conceptually, this is done by taking all possible combinations of rows (the Cartesian product), and then filtering out everything except the answer.
http://www.w3.org/ns/prov#wasQuotedFrom	gis.com