Complex sentence: It now has several thousand speakers, most of whom speak Spanish as a first language, south of the Mapuche in Chile's Valdivian Coastal Range, Osorno Province and on Chiloé Island.
Split into simpler sentences: It now has several thousand speakers, most of whom speak Spanish as a first language. These speaker live south of the Mapuche in Chile's Valdivian Coastal Range, Osorno Province and on Chiloé Island.