Push is related to Object. Commodity is a type of Object. Commodity is related to Oil. 
Sweep is a synonym of Slam. Slam is related to Door. Door is related to Protection. 
Push <--RelatedTo--> Object <--IsA-- Commodity <--RelatedTo--> Oil 
Sweep <--Synonym--> Slam <--RelatedTo--> Door <--RelatedTo--> Protection 