Wall mirror and shipping container: what they have in common

1. Step 1. Wall mirror — is a kind of — Mirror. A mirror.
2. Step 2. Mirror — is part of — Sextant. Mirrors — the principle of double reflection.
3. Step 3. Sextant — is part of — Sailing ship. The sextant and chronometer were a sailing ship’s navigation kit for finding latitude and longitude.
4. Step 4. Sailing ship — is used in — Seaport. A port receives ships.
5. Step 5. Seaport — has part — Container crane. Container cranes.
6. Step 6. Container crane — uses — Shipping container. It moves containers.

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