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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	Walls and floors settle and sag over time, and many older attics don???t have any sort of insulation at all.
http://www.w3.org/ns/prov#wasQuotedFrom	articlescholar.com