About: http://webisa.webdatacommons.org/222630273

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	It is preferred that a depth of the concave 15 is 20 ??m or more, and particularly 30 ??m or more.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com