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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	Steel, wood, and clad are the most expensive materials, followed by fiberglass and aluminum.
http://www.w3.org/ns/prov#wasQuotedFrom	replacementwindowsfordummies.com