Base is related to Ground. Ground is related to Hill. Hill is related to Rolling. 
Intelligence is a type of Ability. Capability is derived from Ability. Capability is a synonym of Fitness. 
Base <--RelatedTo--> Ground <--RelatedTo--> Hill <--RelatedTo--> Rolling 
Intelligence --IsA--> Ability <--DerivedFrom-- Capability <--Synonym--> Fitness 