Hoe blade and radar: what they have in common

1. Step 1. Hoe blade — is part of — Hoe. A plate set across the handle cuts into the soil.
2. Step 2. Hoe — is made of — Stone. The working part was of stone or antler.
3. Step 3. Stone — is material for — Paved road. Paved roads were laid with stone.
4. Step 4. Paved road — is made of — Asphalt. Asphalt.
5. Step 5. Asphalt — is material for — Airport. Or asphalt.
6. Step 6. Airport — uses — Radar. Radars.

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