PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • The price of silver, just like other commodities such as gold and copper, fluctuates due to supply, demand, and speculation of future prices.
http://www.w3.org/ns/prov#wasQuotedFrom
  • xrsilverprice.com