How many artists are above age 46 and joined after 1990?
return artists ;return ages of  #1 ;return #1 where  #2 is  higher than 46 ;return #1 who  joined after 1990 ;return #1 of  both #3 and #4 ;return number of #5
['select', 'project', 'comparative', 'filter', 'intersection', 'aggregate']