Sailing ship and diesel engine: what they have in common

1. Step 1. Sailing ship — evolved from — Boat. Sailing ships grew out of rowing boats.
2. Step 2. Boat — has part — Hull. A hull.
3. Step 3. Hull — is part of — Hydrofoil. A hull.
4. Step 4. Hydrofoil — has part — Diesel engine. An engine.

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