Database: geo
Question: what is the largest city in smallest state through which the mississippi runs
SQL: select city_name from city where state_name in ( select state_name from state where state_name in ( select traverse from river where river_name  =  "mississippi" ) and area  =  ( select min ( area ) from state where state_name in ( select traverse from river where river_name  =  "mississippi" ) ) ) order by population desc limit 1;