Magnetic-core memory and sewage treatment plant: what they have in common

1. Step 1. Magnetic-core memory — has part — Copper wire. Wires threaded through them.
2. Step 2. Copper wire — is part of — Power socket. Contacts.
3. Step 3. Power socket — is made of — Porcelain. The body is ceramic, later plastic.
4. Step 4. Porcelain — is material for — Flush toilet. Toilet bowls are earthenware and porcelain.
5. Step 5. Flush toilet — uses — Sewerage. Draining the waste.
6. Step 6. Sewerage — has part — Sewage treatment plant. Treatment plants.

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