Dump is a type of Sell. you are likely to find Trash in/at/on Dump. you are likely to find Food in/at/on Trash. you are likely to find Food in/at/on Jail. 
Fare is a type of Passenger. 
Sell <--IsA-- Dump <--AtLocation-- Trash <--AtLocation-- Food --AtLocation--> Jail 
Fare --IsA--> Passenger 