#vehicle_fleet__vehiclefleet__fleet  group of motor vehicles operating together under the same ownership
  supertype:  aggregation__collection__accumulation__assemblage  several things grouped together
  subtype:  motor_pool  a fleet of military vehicles controlled by a single agency and available for use as needed
  part of:  bus_line
  member:  taxi__cab__taxicab  a car driven by a person whose job is to take passengers where they want to go in exchange for money
  member:  autobus__autobu__bus__coach__charabanc__double-decker__jitney__motorbus__motorcoach__omnibus__omnibu  a vehicle carrying many passengers; used for public transport; "he always rode the bus to work"

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