About: http://webisa.webdatacommons.org/334889223

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	Steel, cast iron, aluminum, magnesium, copper, zinc, glass, and polymers are the most commonly used materials.
http://www.w3.org/ns/prov#wasQuotedFrom	eng-tips.com