Pitot tube and electric motor: what they have in common

1. Step 1. Pitot tube — is part of — Aeroplane. An air data probe.
2. Step 2. Aeroplane — has part — Landing gear. Landing gear.
3. Step 3. Landing gear — has part — Pneumatic tyre. Aircraft tyres.
4. Step 4. Pneumatic tyre — is part of — Trolleybus. Runs on tyres.
5. Step 5. Trolleybus — has part — Electric motor. An electric motor.

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