About: http://webisa.webdatacommons.org/35802933

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	I usually see them as cast iron, but lately, I have seen more modern versions that are made out of different types of metal and other materials.
http://www.w3.org/ns/prov#wasQuotedFrom	wisegeek.com