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 table_18425346_2 (district VARCHAR, serial_no VARCHAR)
### Question:
In what district is the city listed in Serial number 9?
### Answer:
SELECT COUNT(district) FROM table_18425346_2 WHERE serial_no = 9