Task: Question Decomposition
Input (English): question: Find the names of all instructors who have taught some course and the course_id.
Output (English): #1 return instructors 
#2 return #1 who  have  taught some course 
#3 return names of  #2 
#4 return courses of  #2 
#5 return course_id of  #4 
#6 return #3 ,   #5