Vostok 1 and telephone: what they have in common

1. Step 1. Vostok 1 — uses — R-7 rocket. Launched by a version of the R-7.
2. Step 2. R-7 rocket — is used in — Sputnik 1. Launched by an R-7 rocket.
3. Step 3. Sputnik 1 — has part — Antenna. Four whip antennas.
4. Step 4. Antenna — is part of — Mobile phone. An antenna.
5. Step 5. Mobile phone — evolved from — Telephone. A mobile phone keeps the function of a telephone, replacing the wire with a radio channel.

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