About: http://webisa.webdatacommons.org/272945416

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	Though exchanges did host trading in a variety of products and assets, the most specialised and sophisticated were those focussing on financial instruments, especially securities in the form of stocks or bonds, and variations of these.
http://www.w3.org/ns/prov#wasQuotedFrom	world-exchanges.org