In 2000, which federal entities had between $20000 and $30000 per capita GDP?
return federal entities ;return per capita GDP in  $ of #1 ;return #2 in  2000 ;return #1 where #3 is at least $ 20000 ;return #1 where #3 is at most $ 30000 ;return #1 in  both #4 and  #5
['select', 'project', 'filter', 'comparative', 'comparative', 'intersection']