Complex sentence: The 2015 Qatif mosque bombing occurred on May 22,2015 a suicide bomber attacked the Shia "Mosque Imam Ali" situated in a village of Qatif, in Eastern Province, Saudi Arabia.
Split into simpler sentences: The 2015 Qatif mosque bombing occurred on May 22,2015. A suicide bomber attacked the Shia "Mosque Imam Ali" situated in the village of Qatif, in Eastern Province, Saudi Arabia.