About: http://webisa.webdatacommons.org/449345159

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 retaining structure may be in the form of a well or channel, i.e. an elongate or otherwise structure which may be open-sided along part thereof, for example at its elongate ends, or otherwise.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com