<http://webisa.webdatacommons.org/112412326>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/prov/454891442>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/112412326> .
<http://webisa.webdatacommons.org/112412326>	<http://www.w3.org/ns/prov#value>	"Concrete is fabricated by placing aggregate consisting of gravel, sand, or rock fragments or other mineral material in a very chemically active environment." .
<http://webisa.webdatacommons.org/112412326>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<dot.gov> .