#apron.paved_surface  a paved surface where aircraft stand while not being used
  supertype:  paved_surface__pavedsurface  a horizontal surface covered with paving material
  part of:  airfield__landing_field__landingfield__flying_field__field  a place where planes take off and land
     part of:  transportation_system__transportation__transit  facility consisting of the roads and equipment necessary for the movement of passengers or goods
        part of:  infrastructure__base  the stock of basic facilities and capital equipment needed for the functioning of a country or area; "the industrial base of Japan"

No statement uses or specializes apron.paved_surface; click here to add one.