Axe blade and data centre: what they have in common

1. Step 1. Axe blade — is part of — Axe. A wedge-shaped blade.
2. Step 2. Axe — is made of — Stone. A Neolithic axe is ground stone on a handle.
3. Step 3. Stone — is material for — Foundation. Ancient foundations were laid of stone.
4. Step 4. Foundation — is made of — Concrete. Concrete.
5. Step 5. Concrete — is material for — Data centre. The building is concrete.

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