Escape is related to Dream. Dream is the opposite of Nightmare. Nightmare is a type of Situation. Exception is a type of Situation. 
People can Shout. you are likely to find People in/at/on Classroom. you are likely to find Noise in/at/on Classroom. 
Escape <--RelatedTo--> Dream <--Antonym--> Nightmare --IsA--> Situation <--IsA-- Exception 
Shout <--CapableOf-- People --AtLocation--> Classroom <--AtLocation-- Noise 