Possession is related to Claim. Claim is related to Statement. Estimate is a type of Statement. 
Boy is related to Head. Head is a synonym of Category. Category is a synonym of Kingdom. 
Possession <--RelatedTo--> Claim <--RelatedTo--> Statement <--IsA-- Estimate 
Boy <--RelatedTo--> Head <--Synonym--> Category <--Synonym--> Kingdom 