 <translate> To answer the above question, the relevant sentence is: Natarajan Chandrasekaran took over as Chairman of Tata Sons on 21 February 2017.
So, the answer is Natarajan Chandrasekaran. <yor> Lati dahun ibeere ti o wa loke, gbolohun ti o yẹ ni: Natarajan Chandrasekaran gba ipo alaga ti Tata Sons ni ọjọ 21 Kínní 2017. Nítorí náà, ìdáhùn náà ni Natarajan Chandrasekaran. 