you are likely to find Library in/at/on Town. Library is related to Free. 
Boot is a type of Shoe. Throat is part of Shoe. Throat is related to Tube. Tube is a type of Bring. 
Town <--AtLocation-- Library <--RelatedTo--> Free 
Boot --IsA--> Shoe <--PartOf-- Throat <--RelatedTo--> Tube --IsA--> Bring 