What is the name of the artist, for each language, that has the most songs with a higher resolution than 500?
return songs ;return resolution of #1 ;return #1 where #2 higher than 500 ;return number of  #3 for each language ;return highest of #4 for each language ;return artists of #5 ;return names of #6
['select', 'project', 'comparative', 'group', 'group', 'project', 'project']