Find the official names of cities with population bigger than 1500 or smaller than 500.
SELECT Official_Name FROM city WHERE Population  >  1500 OR Population  <  500
SELECT Official_Name FROM city WHERE Population  >  1500 OR Population  <  500
[{'Official_Name': 'Grand Falls/Grand-Sault'}, {'Official_Name': 'Perth-Andover'}, {'Official_Name': 'Aroostook'}]