346767
Being Iyers , they are all Pancha Dravida Brahmins of the Smartha sect who follow the Advaita philosophy propounded by Adi Shankaracharya .
 Adi Shankaracharya
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Adi Shankaracharya