Poeple from the country that has the national anthem BrabanÃ§onne most commonly speak what language?
return countries ;return national anthems of #1 ;return #1 where #2 is BrabanÃ§onne ;return Poeple of #3 ;return languages of #4 ;return number of  #4 for each #5 ;return #5 where #6 is highest
['select', 'project', 'comparative', 'project', 'project', 'group', 'superlative']