Radial tyre and radio: what they have in common

1. Step 1. Radial tyre — is a kind of — Pneumatic tyre. A kind of tyre.
2. Step 2. Pneumatic tyre — is made of — Vulcanized rubber. A tyre is made of vulcanized rubber.
3. Step 3. Vulcanized rubber — is material for — Weather balloon. The envelope is rubber or latex.
4. Step 4. Weather balloon — has part — Radio. A radiosonde.

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