you are likely to find Police in/at/on Town. Town is related to Colony. Colony is related to Original. 
Teach is the opposite of Learn. you would Learn because Human. Patient is a type of Human. Patient is related to Operation. 
Police --AtLocation--> Town <--RelatedTo--> Colony <--RelatedTo--> Original 
Teach <--Antonym--> Learn --MotivatedByGoal--> Human <--IsA-- Patient <--RelatedTo--> Operation 