Paint and transformer: what they have in common

1. Step 1. Paint — has part — Dye. A pigment.
2. Step 2. Dye — includes — Synthetic dye. A dye.
3. Step 3. Synthetic dye — is made of — Coal. Aniline from coal tar.
4. Step 4. Coal — is used in — Power station. The first stations ran on coal.
5. Step 5. Power station — is part of — Electrical grid. Power stations feed the grid.
6. Step 6. Electrical grid — has part — Transformer. Transformer substations.

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