Neoprene and programmable logic controller: what they have in common

1. Step 1. Neoprene — is a kind of — Synthetic rubber. A synthetic rubber.
2. Step 2. Synthetic rubber — is material for — Pneumatic tyre. Modern tyres are mostly synthetic rubber.
3. Step 3. Pneumatic tyre — is part of — Car. Car wheels have pneumatic tyres.
4. Step 4. Car — has part — Turn signal. Turn signals.
5. Step 5. Turn signal — uses — Relay. A flasher relay.
6. Step 6. Relay — evolved into — Programmable logic controller. It replaced relay cabinets.

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