Complex sentence: The Kalmaks are a sub-group of Siberian Tatars and are indigenious to Kemerovo Oblast who are largely descended from Teleuts, with significant influence of Chat, Eushta and Baraba Tatars.
Split into simpler sentences: The Kalmaks are a sub-group of Siberian Tatars and are indigenious to Kemerovo Oblast. They are largely descended from Teleuts, with significant influence of Chat, Eushta and Baraba Tatars.