Bomb is a type of Object. Pen is a type of Object. 
Debut is a type of Perform. Incentive would make you want to Perform. Incentive is related to Profit. Profit is related to Net. 
Bomb --IsA--> Object <--IsA-- Pen 
Debut --IsA--> Perform <--CausesDesire-- Incentive <--RelatedTo--> Profit <--RelatedTo--> Net 