List top 10 employee work longest in the company. List employee's first and last name.
return employees ;return how long #1 have work ;return the  10 longest #2 ;return #1 where #2 is  in #3 ;return first names of #4 ;return last names of #4 ;return #5 ,  #6
['select', 'project', 'aggregate', 'comparative', 'project', 'project', 'union']