Basketball rim and conveyor belt: what they have in common

1. Step 1. Basketball rim — is part of — Basketball hoop. A steel ring.
2. Step 2. Basketball hoop — has part — Shield. A shield of tempered glass.
3. Step 3. Shield — is made of — Leather. Leather on a wooden base.
4. Step 4. Leather — is material for — Conveyor belt. The first belts were leather.

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