you are likely to find Car in/at/on City. Car is part of Elevator. Elevator is related to Passenger. Passenger is related to Cab. 
you are likely to find Butterfly in/at/on Air. Air is related to Matter. Matter is related to Stuff. Stuff is related to Deposit. 
City <--AtLocation-- Car --PartOf--> Elevator <--RelatedTo--> Passenger <--RelatedTo--> Cab 
Butterfly --AtLocation--> Air <--RelatedTo--> Matter <--RelatedTo--> Stuff <--RelatedTo--> Deposit 