What are the names and salaries for instructors who earn less than the average salary of 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']