Which season had more participating teams in the NASL, 1980-81 or 1981-82?
return the  NASL ;return participating teams of #1 ;return #2 in  1980-81 ;return #2 in  1981-82 ;return number of  #3 ;return number of  #4 ;return which is highest of #5 ,  #6
['select', 'project', 'filter', 'filter', 'aggregate', 'aggregate', 'comparison']