Find the first and last name of all the students of age 18 who have vice president votes.
return students ;return ages of #1 ;return #1 where #2 is 18 ;return vice president votes of #1 ;return number of  #4 for each #1 ;return #1 where #5 is higher than zero ;return #1 in  both #3 and  #6 ;return first names of #7 ;return last names of #7 ;return #8 ,  #9
['select', 'project', 'comparative', 'project', 'group', 'comparative', 'intersection', 'project', 'project', 'union']