Hole can be used for Hide. Hole is related to Rabbit. 
Middle is the opposite of Small. Small is related to College. College is related to Facility. Forum is a type of Facility. 
Hide <--UsedFor-- Hole <--RelatedTo--> Rabbit 
Middle <--Antonym--> Small <--RelatedTo--> College <--RelatedTo--> Facility <--IsA-- Forum 