School is related to Literature. Literature can be used for Professor. 
Function is a type of Utility. Utility is a type of Facility. Facility is related to Useful. Useful is the opposite of Waste. 
School <--RelatedTo--> Literature --UsedFor--> Professor 
Function --IsA--> Utility --IsA--> Facility <--RelatedTo--> Useful <--Antonym--> Waste 