What are the maximum price and score of wines produced by St. Helena appelation?
return wines ;return appelations of  #1 ;return #1 where #2 is  St. Helena ;return prices of  #3 ;return maximum of  #4 ;return scores of  #3 ;return maximum of  #6 ;return #5 ,  #7
['select', 'project', 'comparative', 'project', 'aggregate', 'project', 'aggregate', 'union']