About: http://webisa.webdatacommons.org/227609237

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	Other methods of forming trenches 456 and 458 would result in other shapes such as substantially oval or rectangular.
http://www.w3.org/ns/prov#wasQuotedFrom	google.es