Bonus is a type of Payment. Payment is related to Transaction. Transaction is related to Call. 
Rub is related to Lamp. you are likely to find Lamp in/at/on House. House is related to Stable. Stable is related to Barn. 
Bonus --IsA--> Payment <--RelatedTo--> Transaction <--RelatedTo--> Call 
Rub <--RelatedTo--> Lamp --AtLocation--> House <--RelatedTo--> Stable <--RelatedTo--> Barn 