Yacht and elevator: what they have in common

1. Step 1. Yacht — has part — Sail. Sails.
2. Step 2. Sail — works like — Tensile structure. Stretched fabric working in tension.
3. Step 3. Tensile structure — has part — Wire rope. Cables.
4. Step 4. Wire rope — is part of — Elevator. The car hangs on cables.

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