About: http://webisa.webdatacommons.org/366681338

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	On COMEX, customers trade metal futures and options contracts, including contracts for gold, silver and copper.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov