GPS (satellite navigation) e oil well: o que têm em comum

1. Passo 1. GPS (satellite navigation) — faz parte de — Reusable rocket. Navigation during landing.
2. Passo 2. Reusable rocket — é feito de — Kerosene. The fuel is kerosene or methane.
3. Passo 3. Kerosene — é feito de — Crude oil. A fraction of crude oil.
4. Passo 4. Crude oil — utiliza — Oil well. Oil is extracted from wells.

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