What are the distinct last names of the students who have president votes and have 8741 as the advisor?
return students ;return president votes of #1 ;return number of  #2 for each #1 ;return #1 where #3 is higher than zero ;return advisors of #1 ;return #1 where #5 is 8741 ;return #1 in  both #4 and  #6 ;return distinct last names of #7
['select', 'project', 'group', 'comparative', 'project', 'comparative', 'intersection', 'project']