Complex sentence: The 2013 Bohol earthquake was a deadly event which happened on 15 October, striking the provinces of Bohol, Cebu, Negros Oriental, Masbate and Leyte.
Split into simpler sentences: The 2013 Bohol earthquake was a deadly earthquake that happened on October 15,2013. The earthquake struck the provinces of Bohol, Cebu, Negros Oriental, Masbate and Leyte.