return me the paper after 2000 in Databases area with more than 200 citations . 
return paper ;return #1 after 2000 ;return #2 in Databases area ;return citations of  #3 ;return number of  #4 for each  #3 ;return #3 where  #5 is more than  200
['select', 'filter', 'filter', 'project', 'group', 'comparative']