qnli question: Who are the Quechua and Chorote? sentence: The languages of the Diaguita, Tehuelche, and Selknam nations have become extinct or virtually extinct: the Cacán language (spoken by Diaguitas) in the 18th century and the Selknam language in the 20th century; one Tehuelche language (Southern Tehuelche) is still spoken by a handful of elderly people.