#expo__exhibition__exposition  a collection of things (goods or works of art etc.) for public display
  supertype:  #aggregation__collection__accumulation__assemblage  several things grouped together
  subtype:  #art_exhibition__artexhibition  an exhibition of art objects (paintings or statues)
     subtype:  #retrospective  an exhibition of a representative selection of an artist's life work
  subtype:  #peepshow.expo__raree-show__rareeshow  an exhibition of pictures or objects viewed through a small hole or magnifying glass
  subtype:  #fair  a competitive exhibition of farm products; "she won a blue ribbon for her baking at the county fair"

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