How many years was it between the last time Venice besieged Sinj and when the siege of Herceg Novi started?
return Venice besieged Sinj ;return when  was  #1 ;return highest of #2 ;return the  siege of Herceg Novi started ;return when  was  #4 ;return difference of #5 and  #3 in  years
['select', 'project', 'aggregate', 'select', 'project', 'arithmetic']