Complex sentence: Buckley's remains were recovered by the United Nations Observer Group Beirut on 27 December 1991 Giandomenico Picco, Man Without a Gun, Times Books, New York (1999).
Split into simpler sentences: Buckley's remains were recovered by the United Nations Observer Group Beirut on 27 December 1991. Giandomenico Picco, Man Without a Gun, Times Books, New York (1999).