Teddy bear and rolling mill: what they have in common

1. Step 1. Teddy bear — is made of — Wool. Plush.
2. Step 2. Wool — is part of — Spring mattress. A layer of wool or felt over the springs keeps them from being felt.
3. Step 3. Spring mattress — is made of — Cotton. The cover is cotton fabric.
4. Step 4. Cotton — is used in — Arkwright’s water frame. It spins cotton.
5. Step 5. Arkwright’s water frame — has part — Water wheel. Driven by water.
6. Step 6. Water wheel — is used in — Rolling mill. The first mills were turned by water.

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