About: http://webisa.webdatacommons.org/2528028

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	More than 250 organizations, including broker-dealers, markets, service bureaus, and industry utilities participated, with test participants representing more than 80 percent of normal market volume.
http://www.w3.org/ns/prov#wasQuotedFrom	gao.gov