<http://webisa.webdatacommons.org/400576503>	<http://www.w3.org/ns/prov#value>	"Concrete is a mixture of rock, sand, or other fillers and Portland Cement, which has a high embodied energy." .
<http://webisa.webdatacommons.org/prov/304190731>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/400576503> .
<http://webisa.webdatacommons.org/prov/303540685>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/400576503> .
<http://webisa.webdatacommons.org/400576503>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/400576503>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<issuu.com> .