Complex sentence: The Tapajós were an indigenous people in Brazil that are now considered extinct, they inhabited the area around the Madeira and the Tapajós rivers, in the Brazilian state of Amazonas in the 17th century.
Split into simpler sentences: The Tapajós were an indigenous people in Brazil that are now considered extinct. They inhabited the area around the Madeira and the Tapajós rivers, in the Brazilian state of Amazonas in the 17th century.