PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • You can find a cement block calculator in various websites such as www.cemexusa.com, www.csgnetwork.com, www.hgtvpro.com, and other sites.
http://www.w3.org/ns/prov#wasQuotedFrom
  • cementcalculator.net