question: If all dog sled teams are heading diagonally to the left with evergreen trees in the background.
#1 return dog sled teams 
#2 return #1 that are heading diagonally to  the  left 
#3 return trees 
#4 return #3 that are evergreen 
#5 return background 
#6 return #4 that is in  #5 
#7 return #2 that are with #6 
#8 return number of  #1 
#9 return number of  #7 
#10 return if  #8 is equal to  #9