Contrast is a type of Comparison. Contrast is a type of Scope. Scope is a type of Extent. 
Answer is related to Time. Time is related to Plate. you are likely to find Corn in/at/on Plate. you are likely to find Corn in/at/on Shop. 
Comparison <--IsA-- Contrast --IsA--> Scope --IsA--> Extent 
Answer <--RelatedTo--> Time <--RelatedTo--> Plate <--AtLocation-- Corn --AtLocation--> Shop 