Auger and barrel: what they have in common

1. Step 1. Auger — is part of — Meat grinder. An auger.
2. Step 2. Meat grinder — has part — Crank. A handle.
3. Step 3. Crank — is made of — Iron. Cranks are iron.
4. Step 4. Iron — is material for — Barrel. The staves are bound with iron hoops.

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