Complex sentence: Shahpour Abdul Reza Pahlavi (19 August 1924--11 May 2004) was Rezā Shāh's son and half-brother of Mohammad Reza Pahlavi.
Split into simpler sentences: Shahpour Abdul Reza Pahlavi (19 August 1924--11 May 2004) was a member of Iran's Pahlavi dynasty. He was a son of Rezā Shāh and a half-brother of Mohammad Reza Pahlavi.