Complex sentence: The 2005 Songkhla bombings were a series of three bombings that took place on 3 April 2005 in the cities of Hat Yai and Songkhla of Thailand's Songkhla Province, and are believed to be part of the ongoing south Thailand insurgency.
Split into simpler sentences: The 2005 Songkhla bombings were a series of three bombings that took place on 3 April 2005 in the cities of Hat Yai and Songkhla of Thailand's Songkhla Province. They and are believed to be part of the ongoing south Thailand insurgency.