Companion is related to Fellow. Fellow is the opposite of Stranger. Stranger is the opposite of National. 
Bow is a type of Stroke. Bow is related to Shooting. Bullet can be used for Shooting. Bullet is related to Bill. 
Companion <--RelatedTo--> Fellow <--Antonym--> Stranger <--Antonym--> National 
Stroke <--IsA-- Bow <--RelatedTo--> Shooting <--UsedFor-- Bullet <--RelatedTo--> Bill 