Basketball hoop and r-7 rocket: what they have in common

1. Step 1. Basketball hoop — uses — Ball. A ball.
2. Step 2. Ball — includes — Golf ball. A ball.
3. Step 3. Golf ball — uses — Drag. The dimples reduce drag.
4. Step 4. Drag — is used in — Parachute. The canopy creates drag.
5. Step 5. Parachute — is part of — Soyuz. Landing by parachute.
6. Step 6. Soyuz — evolved from — R-7 rocket. The Soyuz rocket belongs to the R-7 family.

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