#propeller_plane__propellerplane  an airplane that is driven by a propeller
  supertype:  #airplane__aeroplane__plane  an aircraft that has a fixed wing and is powered by propellers or jets; "the flight was delayed due to trouble with the airplane"
  part:  #airplane_propeller
  subtype:  #double-prop__double-propeller_plane__twin-prop__twin-propeller-plane  a propeller plane with an engine that drives two propellers in opposite directions (for stability)
  subtype:  #propjet__turboprop__turbopropellerplane  an airplane with an external propeller that is driven by a turbojet engine
  subtype:  #single_prop__single-propeller_plane  an propeller plane with a single propeller

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