How many is the difference in the yards of the TD pass to Holt and the yards of the TD pass to McMichael?
return Holt ;return TD  pass to #1 ;return yards  of #2 ;return McMichael ;return TD  pass to #4 ;return yards  of #5 ;return difference of #3 and  #6
['select', 'project', 'project', 'select', 'project', 'project', 'arithmetic']