Gang is a type of Group. Group is related to Jury. Jury is related to Law. Law is related to Written. 
Normal is the opposite of Strange. Strange is the opposite of Ordinary. Ordinary is a different concept from Rare. 
Gang --IsA--> Group <--RelatedTo--> Jury <--RelatedTo--> Law <--RelatedTo--> Written 
Normal <--Antonym--> Strange <--Antonym--> Ordinary <--DistinctFrom--> Rare 