Complex sentence: Despite Mirza Kuchak Khan's advice, Dr. Heshmat surrendered, but he was hanged in "Ghoroghe Kargozari" in Rasht on 11 May 1919 while the governor Tay-moor Taash and his entourage watched.
Split into simpler sentences: Despite Mirza Kuchak Khan's advice, Dr. Heshmat surrendered. He was hanged in "Ghoroghe Kargozari" in Rasht on 11 May 1919, while the governor, Teymour Tash, and his entourage watched.