#gown  long, usually formal, woman's dress
  supertype:  dress__dres  a one-piece garment for a woman; has skirt and bodice
  part:  train
  subtype:  ball_gown  the most formal gown; worn to a ball
  subtype:  bridal_gown__wedding_gown__weddinggown__wedding_dress__weddingdres  a gown worn by the bride at a wedding
  subtype:  dinner_dress__dinner_gown__evening_gown__eveninggown__tea_gown__teagown  a formal gown for evening wear
  subtype:  mantua  loose gown of the 17th and 18th centuries

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