PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • In a recent article in Scientific American magazine, Luis Bettencourt and Geoffrey West, theoretical physicists at the Santa Fe Institute and Los Alamos National Laboratory, said their studies suggest that when the population of a city doubles, measures such as wages and patents per capita rise by 15% on average.
http://www.w3.org/ns/prov#wasQuotedFrom
  • barrons.com