How many yards were gained on all touchdowns and field goals that happened in the first two quarters of play?
return quarters of play ;return the  first two of #1 ;return touchdowns of #2 ;return field goals of #2 ;return yards of #3 ;return yards of #4 ;return #5 ,  #6 ;return sum of #7
['select', 'project', 'project', 'project', 'project', 'project', 'union', 'aggregate']