Conversation so far:
Who is the new chairman of National Scheduled Tribes Commision
On 28 February 2017, Nand Kumar Sai assumed charge as chairman of National Commission for Scheduled Tribes.
How old is Nand Kumar Sai
Nand Kumar Sai was born on 1 January 1946, is an Indian politician and a member of the Bharatiya Janata Party. He is 74 years old.
What city was Nand Kumar Sai born in
Nand Kumar Sai was born in the small village of Bhagora in the Jashpur district of the Indian state of Madhya Pradesh.

Question: Who was the predecesor
Self-contained rewrite: Who was Nand Kumar Sai's predecesor