About: http://webisa.webdatacommons.org/178690200

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	While there are a variety of types of cast iron, the most common is gray cast iron, and these guidelines are directed toward this type of material.
http://www.w3.org/ns/prov#wasQuotedFrom	weldinginfocenter.org