Complex sentence: The party received 207 out of 300 seats, but the Zia regime did nbot last long, but fell on May 29,1981 when after numerous escapes, Zia was assassinated in Chittagong.
Split into simpler sentences: The party received 207 out of 300 seats, but the Zia regime wasn't long. It fell on May 29,1981 when after numerous of escapes, he was assassinated in Chittagong.