Sprinkler and nuclear reactor: what they have in common

1. Step 1. Sprinkler — has part — Valve. A glass-bulb valve.
2. Step 2. Valve — is part of — Gas stove. Gas taps.
3. Step 3. Gas stove — uses — Natural gas. The fuel is gas.
4. Step 4. Natural gas — is used in — Thermal power station. Gas.
5. Step 5. Thermal power station — works like — Nuclear power plant. A nuclear plant is a thermal station in which the boiler is replaced by a reactor.
6. Step 6. Nuclear power plant — has part — Nuclear reactor. The reactor heats the coolant.

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