Task: Question Decomposition
Input (English): question: List the first name of all employees with job code PROF ordered by their date of birth.
Output (English): #1 return employees 
#2 return job codes of  #1 
#3 return #1 where  #2 is PROF 
#4 return first names of  #3 
#5 return dates of  birth of #3 
#6 return #4 sorted by #5