├ automobile
   │ ├ Interior Supplies
   │ │ └ Seats and seat covers
   │ │    ├ sports seat
   │ │    ├ Heated seats
   │ │    ├ seat cover
   │ │    ├ seat rail
   │ │    ├ headrest (esp. on a car seat)
   │ │    ├ seat belt
   │ │    ├ bench seat
   │ │    ├ (car) child seat
   │ │    └ Other seats and seat covers
   │    └ Interior Parts
   │       └ seat cover
   ├ bicycle
   │ └ Frame, Parts
   │    └ Bicycle seat cover
   └ motorcycle
      └ Exterior Parts
         └ seat cover
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