Complex sentence: Muath Safi Yousef al-Kasasbeh (South Levantine pronunciation:; 29 May 1988--c.3 January 2015) was a Royal Jordanian Air Force pilot who was captured, held hostage, and executed by the Islamic State of Iraq and the Levant (ISIS).
Split into simpler sentences: Muath Safi Yousef al-Kasasbeh (South Levantine pronunciation:; 29 May 1988--c.3 January 2015) was a Royal Jordanian Air Force pilot. He was captured, held hostage, and executed by the Islamic State of Iraq and the Levant (ISIS).