About: http://webisa.webdatacommons.org/392274731

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	Retaining walls may be formed from any number of materials including steel or other metal alloys, wood, or block among other material.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com.au