Metal is related to Hard. Hard is related to Egg. Egg is related to Young. Young is the opposite of Ancient. 
Thought is related to Mind. Mind is a synonym of Opinion. Opinion is a synonym of Stance. Stance is a type of Position. 
Metal <--RelatedTo--> Hard <--RelatedTo--> Egg <--RelatedTo--> Young <--Antonym--> Ancient 
Thought <--RelatedTo--> Mind <--Synonym--> Opinion <--Synonym--> Stance --IsA--> Position 