About: http://webisa.webdatacommons.org/309182471

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 are now even ETFs that track the value of commodities such as gold and silver, with copper a possibility in the future.
http://www.w3.org/ns/prov#wasQuotedFrom	aaii.com