#passenger_train__passengertrain  a train that carries passengers
  supertype:  railroad_train__train  public transport provided by a line of railway cars coupled together and drawn by a locomotive; "express trains don't stop at Princeton Junction"
  subtype:  commuter_train  a passenger train that is ridden primarily by commuters
  part:  couchette
  member:  baggage_car__baggagecar__luggage_van__luggagevan  a railway car where passengers' bags are carried
  member:  passenger_car__passengercar__coach__carriage  a railcar where passengers ride

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