Task: Question Generation
Input (English): #1 return items 
#2 return colors of #1 
#3 return number of  #1 for each #2 
#4 return #2 where #3 is one 
#5 return #1 where #2 is the  same as #4 
#6 return shape of #5
Output (English): What is the shape of the only item that doesn't have another item of the same color?