Saucepan and internet: what they have in common

1. Step 1. Saucepan — includes — Rice cooker. A rice cooker is an electric pot that switches off when the rice is done.
2. Step 2. Rice cooker — has part — Thermostat. Switching off by temperature.
3. Step 3. Thermostat — is part of — Smart home. A smart thermostat.
4. Step 4. Smart home — uses — Internet of things. Devices on a network.
5. Step 5. Internet of things — uses — Internet. Connecting to the network.

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