Wicker gondola basket and electric motor: what they have in common

1. Step 1. Wicker gondola basket — is part of — Blimp. A crew cabin under the envelope.
2. Step 2. Blimp — has part — Propeller. Propellers provide thrust.
3. Step 3. Propeller — is part of — Bow thruster. A propeller in a tunnel.
4. Step 4. Bow thruster — has part — Electric motor. An electric motor turns the propeller.

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