Bra shoulder straps and air conditioner: what they have in common

1. Step 1. Bra shoulder straps — is part of — Bra. Adjustable straps.
2. Step 2. Bra — is made of — Cotton. Cotton.
3. Step 3. Cotton — is material for — Vacuum cleaner. The dust bag is a cloth bag.
4. Step 4. Vacuum cleaner — has part — Impeller. An impeller creates the suction.
5. Step 5. Impeller — is part of — Compressor. A centrifugal compressor is an impeller.
6. Step 6. Compressor — is part of — Air conditioner. A compressor.

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