#showman__promoter__impresario  a sponsor who books and stages public entertainments
  supertype:  booker__booking_agent__bookingagent  someone who engages a person or company for performances
  instance:  Phineas_Taylor_Barnum  William_Frederick_Cody  Sergei_Pavlovich_Diaghilev  Richard_D'Oyly_Carte  Solomon_Hurok  Charles_Ringling
  subtype:  exhibitor__exhibitioner__shower  someone who organizes an exhibit for others to see
  subtype:  organ-grinder__organgrinder  a street musician who plays a hand organ or hurdy-gurdy
  subtype:  pornographer__porn_merchant  someone who presents shows or sells writing or pictures that are sexually explicit in violation of the community mores

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