Complex sentence: The Siege of Antioch took place during the First Crusade in 1097 and 1098 by the crusaders against the Muslim city, lasted from October 21,1097, to June 2,1098.
Split into simpler sentences: The Siege of Antioch took place during the First Crusade in 1097 and 1098. The first siege, by the crusaders against the Muslim city, lasted from October 21,1097, to June 2,1098.