Nylon and nuclear reactor: what they have in common

1. Step 1. Nylon — is material for — Hot air balloon. A light, strong envelope fabric.
2. Step 2. Hot air balloon — evolved into — Airship. A steerable balloon.
3. Step 3. Airship — has part — Propeller. Air propellers.
4. Step 4. Propeller — is part of — Nuclear icebreaker. Propellers.
5. Step 5. Nuclear icebreaker — has part — Nuclear reactor. A reactor plant.

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