Task: Question Decomposition
Input (English): question: If all golf balls shown are plain and unmarked.
Output (English): #1 return golf balls 
#2 return #1 that are plain 
#3 return #2 that are unmarked 
#4 return number of  #3 
#5 return number of  #1 
#6 return if  #4 is equal to  #5