Complex sentence: Violent unrest in Kosovo broke out on 17 March 2004, when clashes erupted between the Kosovo Albanians and the Kosovo Serb minority following a series of ethnically-motivated incidents.
Split into simpler sentences: Violent unrest in Kosovo broke out on 17 March 2004. Clash erupted between the Kosovo Albanians and the Kosovo Serb minority following a series of ethnically-motivated incidents.