Fibreglass and typewriter: what they have in common

1. Step 1. Fibreglass — is material for — Motherboard. The board is fibreglass laminate.
2. Step 2. Motherboard — is part of — Laptop. All the laptop's chips sit on the motherboard.
3. Step 3. Laptop — has part — Keyboard. The keyboard is built into the laptop's case.
4. Step 4. Keyboard — is part of — Typewriter. The keys drive levers with type.

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