Sleeping car and needle: what they have in common

1. Step 1. Sleeping car — has part — Bogie. Bogies.
2. Step 2. Bogie — is part of — Diesel locomotive. Bogies with wheelsets.
3. Step 3. Diesel locomotive — evolved from — Steam locomotive. It replaced the steam locomotive.
4. Step 4. Steam locomotive — has part — Crank. Connecting rods and cranks carry the piston stroke to the wheels.
5. Step 5. Crank — is part of — Sewing machine. A crank turns rotation into the stroke of the needle.
6. Step 6. Sewing machine — has part — Needle. A needle with the eye near its point.

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