#blue_jean__jean__denim  close-fitting pants of heavy denim for casual wear (usually in the plural)
  supertype:  trousers__pants__pant  (usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately; "he had a sharp crease in his trousers"
  subtype:  Levi's__levis__levi  (Levi's is a trademark) a popular brand of jeans

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