Skyscraper and needle: what they have in common

1. Step 1. Skyscraper — has part — Steel frame. A steel frame.
2. Step 2. Steel frame — has part — Rivet. Early frames were riveted.
3. Step 3. Rivet — is part of — Jeans. Copper rivets on the pockets.
4. Step 4. Jeans — is a kind of — Trousers. Trousers.
5. Step 5. Trousers — uses — Needle. Trousers were sewn with a needle.

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