Globe and incandescent light bulb: what they have in common

1. Step 1. Globe — is made of — Paper. The world map is glued onto the ball in paper gores.
2. Step 2. Paper — is material for — Billboard. The poster is paper.
3. Step 3. Billboard — has part — LED. LED screens.
4. Step 4. LED — is part of — Torch (flashlight). Modern torches use LEDs.
5. Step 5. Torch (flashlight) — has part — Incandescent light bulb. A bulb (today an LED).

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