About: http://webisa.webdatacommons.org/353002372

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	Underlying Index, such as futures contracts, options on futures contracts, options, and swaps.
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov