PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • PlaceWare was a provider of web conferencing software founded in 1996 by Xerox engineers Pavel Curtis, Mike Dixon, and David Nichols as a spin-off from Xerox PARC. Its first product, PlaceWare Auditorium, was rolled out in March 1997, and used by such companies as Hewlett-Packard, Intel, Sun Microsystems, and PBS.
http://www.w3.org/ns/prov#wasQuotedFrom
  • freebase.com