Large spinning drive wheel and electrical grid: what they have in common

1. Step 1. Large spinning drive wheel — is part of — Spinning jenny. A drive wheel with a handle.
2. Step 2. Spinning jenny — has part — Spindle. One wheel turns eight or more spindles.
3. Step 3. Spindle — is made of — Clay. The spindle whorl was shaped from clay or carved from stone.
4. Step 4. Clay — is material for — Brick. Bricks are moulded from clay.
5. Step 5. Brick — is material for — Power station. The buildings of the first power stations were brick.
6. Step 6. Power station — is part of — Electrical grid. Power stations feed the grid.

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