About: http://webisa.webdatacommons.org/402493955

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	In many cities in the developing world, traffic congestion is a major problem and travel surveys do not exist, Gonz???lez says.
http://www.w3.org/ns/prov#wasQuotedFrom	sciencedaily.com