Valley is a different concept from Hill. Hill is related to Roll. Roll is a type of Film. 
Counselor is a type of Supervisor. Supervisor is a type of Person. Person wants (to) Creativity. Creativity is a type of Ability. 
Valley <--DistinctFrom--> Hill <--RelatedTo--> Roll --IsA--> Film 
Counselor --IsA--> Supervisor --IsA--> Person --Desires--> Creativity --IsA--> Ability 