Complex sentence: Significant Ethnic Turkic speaker Kazakhs constitute 3.9% of Mongolia's population and the other Tuvan, Khoton, Chantuu, Tsaatan are Mongolized people with Turkic origin and speak in Mongolian.
Split into simpler sentences: Significant Ethnic Turkic speaker Kazakhs constitute 3.9% of Mongolia's population. Khotons and Chantuu are Mongolized people with Turkic origin and speak in Mongolian.