Flying shuttle and aerosol can: what they have in common

1. Step 1. Flying shuttle — is part of — Power loom. A flying shuttle.
2. Step 2. Power loom — has part — Watt steam engine. Driven by a steam engine.
3. Step 3. Watt steam engine — has part — Valve. A slide valve distributes the steam.
4. Step 4. Valve — is part of — Aerosol can. A valve.

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