About: http://webisa.webdatacommons.org/101376318

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	There's nothing in the articles that demands it has to be specifically a metal at least, and the properties it has are spread across various kinds of compounds, perhaps including plastics.
http://www.w3.org/ns/prov#wasQuotedFrom	tropi.us