Cups e gas lamp: o que têm em comum

1. Passo 1. Cups — faz parte de — Sutiã. Cups.
2. Passo 2. Sutiã — é feito de — Silk. Mary Phelps Jacob’s bra was made of silk handkerchiefs.
3. Passo 3. Silk — é material para — Hot air balloon. The Montgolfier balloon was fabric lined with paper.
4. Passo 4. Hot air balloon — tem como parte — Gas burner. It heats the air in the envelope with a propane flame.
5. Passo 5. Gas burner — faz parte de — Gas lamp. A coal-gas burner.

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