About: http://webisa.webdatacommons.org/346619857

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	If these columns are not defined, the variable behaves as before, i.e. considers internal four categories.
http://www.w3.org/ns/prov#wasQuotedFrom	urbansim.org