PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Twenty years ago the ???spread??? between the price at which a human market maker would buy and sell a share was sometimes as much as 25 cents; the fact that it is now often as little as one cent means substantial savings for mutual funds, pension funds and other large institutions, almost certainly outweighing by far their losses to algo-sniffers.
http://www.w3.org/ns/prov#wasQuotedFrom
  • lrb.co.uk