Bread and steam locomotive: what they have in common

1. Step 1. Bread — uses — Oven. Bread is baked in an oven.
2. Step 2. Oven — works like — Kiln. A kiln and a baking oven work alike: fire heats a closed chamber.
3. Step 3. Kiln — has part — Chimney. The chimney creates a draught.
4. Step 4. Chimney — is part of — Steam locomotive. Smoke from the firebox leaves through the locomotive's chimney.

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