Postage stamp paper and internal combustion engine: what they have in common

1. Step 1. Postage stamp paper — is part of — Postage stamp. Watermarked paper.
2. Step 2. Postage stamp — is made of — Paper. Paper.
3. Step 3. Paper — is material for — Hot air balloon. It was lined with paper on the inside.
4. Step 4. Hot air balloon — evolved into — Airship. A steerable balloon.
5. Step 5. Airship — has part — Internal combustion engine. Internal combustion engines.

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