Which month in 1973 had a lowest DM modification law, November or December?
return DM modification laws ;return #1 in  November 1973 ;return #1 in  December 1973 ;return how low was  #2 ;return how low was  #3 ;return which is the  lowest of #4 ,  #5
['select', 'filter', 'filter', 'project', 'project', 'comparison']