question: How many more touchdowns did Denver have in the second quarter than the first?
#1 return Denver 
#2 return touchdowns of #1 
#3 return #2 in  the  second quarter 
#4 return #2 in  the  first quarter 
#5 return number of  #3 
#6 return number of  #4 
#7 return difference of #5 and  #6