Swallow is a type of Single. 
you are likely to find Box in/at/on Garage. you are likely to find Truck in/at/on Garage. Truck is related to Automobile. Automobile is related to Vehicle. 
Swallow --IsA--> Single 
Box --AtLocation--> Garage <--AtLocation-- Truck <--RelatedTo--> Automobile <--RelatedTo--> Vehicle 