What are the names, locations, and years of opening for tracks with seating higher than average?
return tracks ;return seating of  #1 ;return average of  #2 ;return #1 where #2 is  higher than #3 ;return names of  #4 ;return locations of  #4 ;return years of  opening of #4 ;return #5 ,  #6 ,   #7
['select', 'project', 'aggregate', 'comparative', 'project', 'project', 'project', 'union']