About: http://webisa.webdatacommons.org/403969329

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	ECNs do not allow investors to trade directly with one another, but allow subscribers such as broker-dealers to use these systems to execute the orders sent to them by their clients.
http://www.w3.org/ns/prov#wasQuotedFrom	cram.com