<http://webisa.webdatacommons.org/203168814>	<http://www.w3.org/ns/prov#value>	"Homes lose heat mainly in two ways: through the outside building surfaces and by air leaking in and out (called air infiltration)." .
<http://webisa.webdatacommons.org/prov/251036153>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/203168814> .
<http://webisa.webdatacommons.org/203168814>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/203168814>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<pct.edu> .