what is the longest river in the state with the most major cities
SELECT river_name FROM river WHERE traverse  =  ( SELECT state_name FROM city WHERE population  >  150000 GROUP BY state_name ORDER BY COUNT ( city_name ) DESC LIMIT 1 ) ORDER BY LENGTH DESC LIMIT 1;
SELECT river_name FROM river WHERE traverse  =  ( SELECT state_name FROM city WHERE population  >  150000 GROUP BY state_name ORDER BY COUNT ( city_name ) DESC LIMIT 1 ) ORDER BY LENGTH DESC LIMIT 1;
[{'Nenhum': 'Nenhum resultado encontrado'}]