Voice assistant and chisel: what they have in common

1. Step 1. Voice assistant — is used in — Smartphone. A voice assistant.
2. Step 2. Smartphone — has part — LED. The camera flash.
3. Step 3. LED — is part of — Street light. LEDs.
4. Step 4. Street light — is part of — Tunnel. Lighting.
5. Step 5. Tunnel — uses — Chisel. Hezekiah’s Tunnel was cut by hand with chisels.

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