Task: Question Decomposition
Input (English): question: Which industry across Greater Sydney is larger: Professional Services or Retail Trade?
Output (English): #1 return Greater Sydney 
#2 return industries of #1 
#3 return #2 that is Professional Services 
#4 return #2 that is Retail Trade 
#5 return size of #3 
#6 return size of #4 
#7 return which is highest of #5 ,  #6