you are likely to find Snake in/at/on Mountain. 
Bomb can be used for War. you are likely to find Confusion in/at/on War. Confusion is a type of Mistake. Mistake is the opposite of Correct. 
Mountain <--AtLocation-- Snake 
Bomb --UsedFor--> War <--AtLocation-- Confusion --IsA--> Mistake <--Antonym--> Correct 