Python and liquid-propellant rocket engine: what they have in common

1. Step 1. Python — is a kind of — Programming language. A language.
2. Step 2. Programming language — includes — BASIC. A language.
3. Step 3. BASIC — is used in — Personal computer. The first PCs came with BASIC.
4. Step 4. Personal computer — is a kind of — Computer. A computer.
5. Step 5. Computer — is used in — Lunar module. The Apollo Guidance Computer.
6. Step 6. Lunar module — has part — Liquid-propellant rocket engine. A descent engine.

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