Show the stadium name and capacity with most number of concerts in year 2014 or after.
return stadiums ;return concerts in #1 ;return #2 in years 2014 and  after ;return number of #3 for each #1 ;return #1 where #4 is  highest ;return name of #5 ;return capacity of #5 ;return #6 , #7
['select', 'project', 'filter', 'group', 'superlative', 'project', 'project', 'union']