What are the first names and ages of all students who are playing both Football and Lacrosse?
return students ;return #1 playing Football ;return #1 playing Lacrosse ;return #1 of  both #2 and  #3 ;return first names of  #4 ;return ages of  #4 ;return #5 ,  #6
['select', 'filter', 'filter', 'intersection', 'project', 'project', 'union']