Sibling is a type of Relative. Sibling is the opposite of Cousin. Cousin is related to Aunt. 
Country is related to Political. Political is related to State. State is related to Confusion. 
Relative <--IsA-- Sibling <--Antonym--> Cousin <--RelatedTo--> Aunt 
Country <--RelatedTo--> Political <--RelatedTo--> State <--RelatedTo--> Confusion 