Complex sentence: Shivallli Smartha Brahmins are a sect of Kannada speaking Shivalli Brahmins and follow Advaita Vedanta propounded by Adi Shankaracharya.
Split into simpler sentences: Shivallli Smartha Brahmins (SSBs) are a sect of Kannada speaking Shivalli Brahmins. They follow Advaita Vedanta propounded by Adi Shankaracharya.