Curling iron and internet: what they have in common

1. Step 1. Curling iron — has part — Thermostat. A thermostat holds the set temperature so the hair is not burnt.
2. Step 2. Thermostat — is part of — Smart home. A smart thermostat.
3. Step 3. Smart home — uses — Internet of things. Devices on a network.
4. Step 4. Internet of things — uses — Internet. Connecting to the network.

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