Immigrant is the opposite of Citizen. Citizen is a type of National. National is related to Liberty. 
Couple is related to Double. Double is related to Measure. Measure is related to Recipe. 
Immigrant <--Antonym--> Citizen --IsA--> National <--RelatedTo--> Liberty 
Couple <--RelatedTo--> Double <--RelatedTo--> Measure <--RelatedTo--> Recipe 