Did Fall 2018's enrollment have more undergrad or graduate students?
return undergrad students ;return graduate students ;return #1 in  Fall 2018 ;return #2 in  Fall 2018 ;return number of  #3 ;return number of  #4 ;return which is more of #5 ,  #6
['select', 'select', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']