Limb is the opposite of Body. Body is related to Man. Black is a type of Man. Black is related to Tire. 
Saving is related to Account. Account is a synonym of Score. Convert is a type of Score. Convert is a synonym of Transform. 
Limb <--Antonym--> Body <--RelatedTo--> Man <--IsA-- Black <--RelatedTo--> Tire 
Saving <--RelatedTo--> Account <--Synonym--> Score <--IsA-- Convert <--Synonym--> Transform 