Shukhov Tower and solar panel: what they have in common

1. Step 1. Shukhov Tower — has part — Antenna. A radio tower.
2. Step 2. Antenna — includes — Dish antenna. An antenna.
3. Step 3. Dish antenna — is part of — Communications satellite. Antennas.
4. Step 4. Communications satellite — has part — Solar panel. Power comes from solar panels.

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