How many months after a wireless station was built at Misratah did Sayed Ahmed board a German submarine at al-Aquila and go into exile in Turkey?
return wireless station was  built at  Misratah ;return Sayed Ahmed boards a German submarine at al-Aquila and  go into exile in  Turkey ;return month of #1 ;return month of #2 ;return the  difference of #4 and  #3
['select', 'select', 'project', 'project', 'arithmetic']