<http://webisa.webdatacommons.org/prov/295417414>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/280519311> .
<http://webisa.webdatacommons.org/280519311>	<http://www.w3.org/ns/prov#value>	"Perlite is no longer used as an insulating material, except for the occasional do-it-yourselfer, although it is not uncommon to find it in existing houses." .
<http://webisa.webdatacommons.org/280519311>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/280519311>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<eco-manager.com> .