About: http://webisa.webdatacommons.org/453773339

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	BACKGROUND OF INVENTION [0003] Traditional trading of commodities or financial instruments such as stocks and bonds has taken place in markets where traders offer various commodities at different prices.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com