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<http://webisa.webdatacommons.org/392274731>	<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://webisa.webdatacommons.org/392274731>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.com.au> .
<http://webisa.webdatacommons.org/prov/309085633>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/392274731> .
<http://webisa.webdatacommons.org/prov/162781179>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/392274731> .