About: http://webisa.webdatacommons.org/416079396

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	Market prices for those materials can be volatile due to changes in supply and demand, manufacturing and other costs, regulations and tariffs, economic conditions and other circumstances.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov