Task: Question Decomposition
Input (English): question: What is the nickname of staff with first name as Janessa and last name as Sawayn?
Output (English): #1 return staff 
#2 return first names of #1 
#3 return #1 where #2 is  Janessa 
#4 return last names of #1 
#5 return #1 where #4 is  Sawayn 
#6 return nickname of both #3 and #5