21. The method of claim 20 , wherein a commonality between the instances i and j is computed by expanding respective descriptions to include one or more other statements that can be inferred based on the subject-sets for the at least one given ontology property and the taxonomy defined based on the domain of the at least one given ontology property, and obtaining common pairs of statements that occur in both of the respective descriptions.
21. The method of claim 20 , wherein a commonality between the instances i and j is computed by expanding respective descriptions to include one or more other statements that can be inferred based on the subject-sets for the at least one given ontology property and the taxonomy defined based on the domain of the at least one given ontology property, and obtaining common pairs of statements that occur in both of the respective descriptions. 22. The method of claim 21 , wherein information content in the commonality is a probability that a pair of random instances satisfies a pairs of statements in the commonality.