10. The system according to claim 9 , wherein the advertisement engine is configured to determine a value of predicates in the hierarchy located above the corresponding position of the predicate value based on the predicate value and the hierarchy.
10. The system according to claim 9 , wherein the advertisement engine is configured to determine a value of predicates in the hierarchy located above the corresponding position of the predicate value based on the predicate value and the hierarchy. 11. The system according to claim 10 , wherein the advertisement engine is configured to determine a value of predicates in the hierarchy located below the corresponding position of the predicate value based on the query and the hierarchy.