#capaciousness__capaciousnes__roomines__spaciousnes__commodiousness  spatial largeness (especially inside a building)
  supertype:  largeness__largenes__bignes  the property of having a relatively great size
  subtype:  airiness  the property of something spacious and abounding in fresh air
  subtype:  seating_capacity__seatingcapacity  the number of people that can be seated in a vehicle or auditorium or stadium etc.

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