you are likely to find Bell in/at/on School. Bell is related to Implement. Implement is related to Ear. 
Assembly is a type of Whole. Whole is the opposite of Break. Break is a type of Interrupt. 
School <--AtLocation-- Bell <--RelatedTo--> Implement <--RelatedTo--> Ear 
Assembly --IsA--> Whole <--Antonym--> Break --IsA--> Interrupt 