How many total yards were gained on the first two rushing touchdowns?
return touchdowns ;return #1 that were rushing ;return first of #2 ;return #2 besides  #3 ;return first of #4 ;return yards of #3 ;return yards of #5 ;return sum of #6 and  #7
['select', 'filter', 'aggregate', 'discard', 'aggregate', 'project', 'project', 'arithmetic']