Complex sentence: Rio Toototobi (sometimes known in English as "the Toototobi River"), is a river in the Amazon Rainforest of Brazil, is a tributary of the upper Rio Demini near the headwaters of the Orinoco.
Split into simpler sentences: Rio Toototobi (sometimes known in English as "the Toototobi River"), is a river in the Amazon Rainforest of Brazil. It is a tributary of the upper Rio Demini near the headwaters of the Orinoco.