Warehouse robot and aeroplane: what they have in common

1. Step 1. Warehouse robot — evolved from — Forklift. Automating warehouses.
2. Step 2. Forklift — has part — Hydraulic cylinder. Lifting the forks.
3. Step 3. Hydraulic cylinder — is part of — Retractable landing gear. Retraction cylinders.
4. Step 4. Retractable landing gear — is a kind of — Landing gear. Landing gear.
5. Step 5. Landing gear — is part of — Aeroplane. Landing gear.

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