Deodorant and shipping container: what they have in common

1. Step 1. Deodorant — uses — Aerosol can. An aerosol.
2. Step 2. Aerosol can — has part — Valve. A valve.
3. Step 3. Valve — is part of — Ventilator. Valves.
4. Step 4. Ventilator — is part of — Ambulance. Medical equipment.
5. Step 5. Ambulance — evolved from — Truck. A special-purpose vehicle.
6. Step 6. Truck — uses — Shipping container. A container moves from ship to truck without being unloaded.

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