Plasma display and radar: what they have in common

1. Step 1. Plasma display — is part of — Flat-screen TV. Plasma TVs.
2. Step 2. Flat-screen TV — evolved from — Television set. The picture tube was replaced by a panel.
3. Step 3. Television set — has part — Antenna. An antenna.
4. Step 4. Antenna — is part of — Radar. An antenna emits and receives.

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