Pay is a type of Be. Deserve is a type of Be. Deserve is a synonym of Merit. 
Tip is a synonym of Clue. Clue is a synonym of Signature. Signature is a type of Sheet. Sheet is a type of Pour. 
Pay --IsA--> Be <--IsA-- Deserve <--Synonym--> Merit 
Tip <--Synonym--> Clue <--Synonym--> Signature --IsA--> Sheet --IsA--> Pour 