Instance is related to Class. you are likely to find Homework in/at/on Class. Homework is related to Report. 
Lend is the opposite of Pay. Pay is related to Reward. Reward is a type of Offer. 
Instance <--RelatedTo--> Class <--AtLocation-- Homework <--RelatedTo--> Report 
Lend <--Antonym--> Pay <--RelatedTo--> Reward --IsA--> Offer 