Race is related to Rocket. Private is a type of Rocket. Private is related to Detective. Detective is related to Policeman. 
Capacity is a type of Ability. Capacity is a synonym of Capability. Capability is related to Able. Able is a different concept from Impossible. 
Race <--RelatedTo--> Rocket <--IsA-- Private <--RelatedTo--> Detective <--RelatedTo--> Policeman 
Ability <--IsA-- Capacity <--Synonym--> Capability <--RelatedTo--> Able <--DistinctFrom--> Impossible 