question_text: The Allies launched a series of attacks in Italy against the line at Monte Cassino how many years after the Chinese forces besieged Japanese troops in Myitkyina.?
decomposition: return year when  Chinese forces besieged Japanese troops in  Myitkyina ;return year when  The Allies launched a series of attacks in  Italy against the  line at Monte Cassino ;return the  difference of #2 and  #1