Find the first names and offices of all instructors who have taught some course and also find the course description.
return instructors ;return courses of #1 ;return number of  #2 for each #1 ;return #1 where #3 is at least one ;return first names of #4 ;return offices of #4 ;return courses of #4 ;return course descriptions of #7 ;return #5 ,  #6 ,   #8
['select', 'project', 'group', 'comparative', 'project', 'project', 'project', 'project', 'union']