Complex sentence: While in prison, he studied at Indira Gandhi National Open University and earned two master's degrees: the first, in 2013, in English literature and the second degree, in 2014, in political science.
Split into simpler sentences: While in prison, he has studied at Indira Gandhi National Open University and earned two master's degrees. The first, in 2013, in English literature and the second degree, in 2014, in political science.