PropertyValue
http://www.w3.org/1999/02/22-rdf-syntax-ns#type
http://www.w3.org/ns/prov#value
  • Below is an example of the historical volatility and implied volatility for AAPL. This data you can get for free very easily from www.ivolatility.com.
http://www.w3.org/ns/prov#wasQuotedFrom
  • optionstradingiq.com