About: http://webisa.webdatacommons.org/263678918

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	systems maintained and operated by the futures exchanges, brokers and other data
http://www.w3.org/ns/prov#wasQuotedFrom	sec.gov