Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE city (Official_Name VARCHAR, Population VARCHAR)
### Question:
Find the official names of cities with population bigger than 1500 or smaller than 500.
### Answer:
SELECT Official_Name FROM city WHERE Population > 1500 OR Population < 500