Common is related to Main. Main is related to Central. Central is related to Park. you are likely to find Cop in/at/on Park. 
Doctor is a type of Scholar. Doctor is related to Man. Man is related to Poet. 
Common <--RelatedTo--> Main <--RelatedTo--> Central <--RelatedTo--> Park <--AtLocation-- Cop 
Scholar <--IsA-- Doctor <--RelatedTo--> Man <--RelatedTo--> Poet 