About: http://webisa.webdatacommons.org/336906629

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	Cast iron, for instance, often contains 2-4% of carbon or sillicon and other impurities in its matrix, which helps it hold heat a bit longer than most metals.
http://www.w3.org/ns/prov#wasQuotedFrom	teachat.com