Did the US sell more Hellfire missiles or PAC-3 missiles to the ROC?
return the  US ;return Hellfire missiles sell to the  ROC of #1 ;return PAC-3 missiles sell to the  ROC of #1 ;return number of  #2 ;return number of  #3 ;return which is more of #4 ,  #5
['select', 'project', 'project', 'aggregate', 'aggregate', 'comparison']