About: http://webisa.webdatacommons.org/310597151

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The Portland Cement Association has numbers to back this up.Cost is an issue.
http://www.w3.org/ns/prov#wasQuotedFrom	finehomebuilding.com