question: If there is at least canoe in the grass in one picture and one canoe in the water in the other image.
#1 return one image 
#2 return canoe  in    #1 
#3 return grass in    #1 
#4 return #2 that is in    #3 
#5 return number of  #4 
#6 return if  #5 is at least one 
#7 return other image 
#8 return canoe  in    #7 
#9 return water in    #7 
#10 return #8 that is in    #9 
#11 return number of  #10 
#12 return if  #11 is equal to  one 
#13 return if  both  #6 and #12 are true