question: If a single cow is in a field in each of the images.
#1 return cows 
#2 return a  field 
#3 return #1 in  #2 
#4 return images of #3 
#5 return number of  #3 for each  #4 
#6 return #4 where  #5 is equal to  one 
#7 return number of  #6 
#8 return images 
#9 return number of  #8 
#10 return if  #7 is equal to  #9