Busy is a different concept from Rest. Rest is related to Road. Road is related to Pat. 
Lot is related to Car. you are likely to find Flat in/at/on Car. World cannot be Flat. 
Busy <--DistinctFrom--> Rest <--RelatedTo--> Road <--RelatedTo--> Pat 
Lot <--RelatedTo--> Car <--AtLocation-- Flat <--NotHasProperty-- World 