<http://webisa.webdatacommons.org/272827032>	<http://www.w3.org/ns/prov#value>	"This will be of significant economical importance, since cement is the costliest component of concrete (accounting for more than 75% of the total cost)." .
<http://webisa.webdatacommons.org/prov/423187984>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/272827032> .
<http://webisa.webdatacommons.org/272827032>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<clarkson.edu> .
<http://webisa.webdatacommons.org/272827032>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .