Father is the opposite of Daughter. Daughter is related to Human. 
Head is related to Principal. Principal is similar to Interest. Interest is related to Passion. Passion is related to Fruit. 
Father <--Antonym--> Daughter <--RelatedTo--> Human 
Head <--RelatedTo--> Principal <--SimilarTo--> Interest <--RelatedTo--> Passion <--RelatedTo--> Fruit 