Party is related to Happy. Happy is a different concept from Blue. Blue is related to Depressed. 
Catch is a type of Control. Control is related to Owner. Owner is related to Own. 
Party <--RelatedTo--> Happy <--DistinctFrom--> Blue <--RelatedTo--> Depressed 
Catch --IsA--> Control <--RelatedTo--> Owner <--RelatedTo--> Own 