Adult is the opposite of Minor. Minor is similar to Junior. Junior is similar to Young. Youngster is derived from Young. 
Sensitive is a synonym of Sweet. Orange can be Sweet. 
Adult <--Antonym--> Minor <--SimilarTo--> Junior <--SimilarTo--> Young <--DerivedFrom-- Youngster 
Sensitive <--Synonym--> Sweet <--HasProperty-- Orange 