Task: Question Generation
Input (English): #1 return tractor 
#2 return #1 that is leftward-facing 
#3 return #2 that is green 
#4 return ground 
#5 return #4 that is snowy 
#6 return #3 plowing #5 
#7 return if  #6 is in  an image
Output (English): If an image shows a leftward-facing green tractor plowing snowy ground.