Find the names of all instructors whose salary is greater than the salary of all instructors in the Biology department.
return instructors ;return salary  of #1 ;return #1 in  Biology department ;return salary  of #3 ;return highest of #4 ;return #1 where #2 is higher than #5 ;return name of #6
['select', 'project', 'filter', 'project', 'aggregate', 'comparative', 'project']