Find the name and salary of instructors whose salary is below the average salary of the instructors in the Physics department.
return instructors  ;return departments of  #1 ;return #1 where  #2 is  Physics ;return salaries of  #3 ;return average of  #4 ;return salaries of  #1 ;return #1 where  #6 is  lower than #5 ;return names of  #7 ;return salaries of  #7 ;return #8 ,   #9
['select', 'project', 'comparative', 'project', 'aggregate', 'project', 'comparative', 'project', 'project', 'union']