Solid rocket motor and elevator: what they have in common

1. Step 1. Solid rocket motor — is used in — Multiple rocket launcher. Rockets.
2. Step 2. Multiple rocket launcher — has part — Truck. On a truck chassis.
3. Step 3. Truck — uses — Shipping container. A container moves from ship to truck without being unloaded.
4. Step 4. Shipping container — is used in — Container crane. It moves containers.
5. Step 5. Container crane — has part — Wire rope. Cables.
6. Step 6. Wire rope — is part of — Elevator. The car hangs on cables.

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