Video recorder and car: what they have in common

1. Step 1. Video recorder — has part — Magnetic tape. Video tape.
2. Step 2. Magnetic tape — is part of — UNIVAC I. Tape drives.
3. Step 3. UNIVAC I — has part — Vacuum tube. Vacuum tubes.
4. Step 4. Vacuum tube — is part of — Car radio. The first car radios used vacuum tubes.
5. Step 5. Car radio — is part of — Car. A car radio.

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