Complex sentence: Although many people claim that it was Mustafa Kemal or Bolshevik, according to the official version, Mustafa Suphi was killed by the order of Ottoman Emperor because of his support to liberation of Turkey.
Split into simpler sentences: Although many people claim that it was Mustafa Kemal or the Bolsheviks. According to the official version, Mustafa Suphi was killed by the order of Ottoman Emperor because of his support to liberation of Turkey.