Block is a type of Form. Turn is a type of Form. Turn is related to Other. 
Bullet is related to Pen. Pen is the opposite of Close. Close is similar to Short. Short is related to Article. 
Block --IsA--> Form <--IsA-- Turn <--RelatedTo--> Other 
Bullet <--RelatedTo--> Pen <--Antonym--> Close <--SimilarTo--> Short <--RelatedTo--> Article 