Interest is related to Payment. Bonus is a type of Payment. Bonus is related to Free. Free is related to Escape. 
Drink is related to Alcohol. Alcohol is related to Adult. Adult is related to Duck. 
Interest <--RelatedTo--> Payment <--IsA-- Bonus <--RelatedTo--> Free <--RelatedTo--> Escape 
Drink <--RelatedTo--> Alcohol <--RelatedTo--> Adult <--RelatedTo--> Duck 