Task: Question Decomposition
Input (English): question: If one of the images features exactly one crab.
Output (English): #1 return crab 
#2 return images 
#3 return the  number of  #1 for each  #2 
#4 return #2 where  #3 is equal to  one 
#5 return the  number of  #4 
#6 return if  #5 is equal to  one