Longtime is the opposite of New. New is related to Enter. Enter is a synonym of Participate. Participate is etymologically related to Capable. 
Fantasy is related to Book. Partner is a type of Book. Partner is related to Friendly. Uncle can be Friendly. 
Longtime <--Antonym--> New <--RelatedTo--> Enter <--Synonym--> Participate --EtymologicallyRelatedTo--> Capable 
Fantasy <--RelatedTo--> Book <--IsA-- Partner <--RelatedTo--> Friendly <--HasProperty-- Uncle 