Complex sentence: The 2010 Lufthansa MD-11 crash occured on 27 July 2010, when a a McDonnell Douglas MD-11 registered D-ALCQ, crashed at King Khalid International Airport, Riyadh.
Split into simpler sentences: The 2010 Lufthansa MD-11 crash occured on 27 July 2010. The accident aircraft was a McDonnell Douglas MD-11 registered D-ALCQ, crashed at King Khalid International Airport, Riyadh.