Corkscrew and bicycle: what they have in common

1. Step 1. Corkscrew — uses — Cork. It pulls out the cork.
2. Step 2. Cork — uses — Elasticity. The elasticity of cork.
3. Step 3. Elasticity — is used in — Spoke. Tensioned spokes hold the rim through elasticity.
4. Step 4. Spoke — is part of — Bicycle wheel. Spokes are tensioned between the rim and the hub and carry the load.
5. Step 5. Bicycle wheel — is part of — Bicycle. Two wheels: the front one steers, the rear one drives.

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