How many people, in terms of percentage, were either of German, Irish, or American ancestry?
return people ;return ancestry of #1 ;return #2 that is German ;return #2 that is Irish ;return #2 that is American ;return percentage of #3 ;return percentage of #4 ;return percentage of #5 ;return sum of #6 and  #7 ;return sum of #8 and  #9
['select', 'project', 'filter', 'filter', 'filter', 'project', 'project', 'project', 'arithmetic', 'arithmetic']