How many percent of the market did Sony and Nintendo hold in August of 1997?
return Sony ;return Nintendo ;return percents of the  market of  #1 ;return percents of the  market of  #2 ;return #3 in  August of 1997 ;return #4 in  August of 1997 ;return sum of #5 and  #6
['select', 'select', 'project', 'project', 'filter', 'filter', 'arithmetic']