About: http://webisa.webdatacommons.org/404119837

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	Since the Gold Rush of 1849, San Francisco Bay shrank by a third, as people diked, dredged and filled its waters to create airport runways, housing subdivisions and other development.
http://www.w3.org/ns/prov#wasQuotedFrom	planning.org