How many more yards were gained on the first defensive touchdown relative to the first rushing touchdown?
return defensive touchdowns ;return rushing touchdowns ;return the  first of #1 ;return the  first of #2 ;return yards of #3 ;return yards of #4 ;return the  difference of #5 and  #6
['select', 'select', 'aggregate', 'aggregate', 'project', 'project', 'arithmetic']