Wikipedia and zip: what they have in common

1. Step 1. Wikipedia — evolved from — Encyclopedia. A free encyclopedia.
2. Step 2. Encyclopedia — uses — Gutenberg printing press. The Encyclopédie was a printed publication.
3. Step 3. Gutenberg printing press — uses — Paper. The impression is made on paper.
4. Step 4. Paper — is material for — Paper money. Paper.
5. Step 5. Paper money — is used in — Wallet. It holds money.
6. Step 6. Wallet — has part — Zip. A zipped coin compartment.

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