Complex sentence: Baban was arrested and sentenced to death by the People's Court--established under Qassim's leadership following the coup--though unlike the royal family and many Iraqi politicians in the monarchy, the sentence was commuted and he was not executed.
Split into simpler sentences: Baban was arrested and sentenced to death by the People's Court, which was established under Qassim's leadership following the coup. Unlike the royal family and many Iraqi politicians in the monarchy, the sentence was commuted and Baban was not executed.