#hotel_plan__hotelplan__meal_plan  a plan and a room rate for providing meals to guests at a hotel
  supertype:  #design.organisation__plan  an arrangement scheme; "the awkward design of the keyboard made operation difficult"; "it was an excellent design for living"; "a plan for seating guests"
  subtype:  #American_plan  a hotel plan that includes three meals daily
     subtype:  #modified_American_plan  a hotel plan that includes breakfast and dinner (but not lunch)
  subtype:  #Bermuda_plan  a hotel plan that provides a full breakfast daily
  subtype:  #European_plan__continental_plan__continentalplan  a hotel plan that provides a continental breakfast daily

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