5. The computer-implemented method of claim 1 where the query selection criteria comprises a graph pattern associated with a property and further where the match pattern binds two variables to subject, object pairs associated with the property and related sub-properties.
5. The computer-implemented method of claim 1 where the query selection criteria comprises a graph pattern associated with a property and further where the match pattern binds two variables to subject, object pairs associated with the property and related sub-properties. 6. The computer-implemented method of claim 5 comprising deriving one or more of the property and related sub-properties from a property hierarchy.