question: How many more yards was John Kasay second field goal over his first?
#1 return John Kasay 
#2 return field goals of #1 
#3 return the  first of #2 
#4 return the  second of #2 
#5 return yards of #3 
#6 return yards of #4 
#7 return the  difference of #6 and  #5