Oven is related to Instrument. Instrument is a type of Assistant. Deputy is a type of Assistant. 
you are likely to find Stranger in/at/on Town. you are likely to find Shop in/at/on Town. you are likely to find Shop in/at/on Street. Street is related to Cross. 
Oven <--RelatedTo--> Instrument --IsA--> Assistant <--IsA-- Deputy 
Stranger --AtLocation--> Town <--AtLocation-- Shop --AtLocation--> Street <--RelatedTo--> Cross 