Complex sentence: The First Backward Classes Commission was established by a presidential order on 29 January 1953 under the chairmanship of Kaka Kalelkar, and submitted its report on 30 March 1955.
Split into simpler sentences: The First Backward Classes Commission was set up by a presidential order on 29 January 1953 under the chairmanship of Kaka Kalelkar. The commission submitted its report on 30 March 1955.