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_name_48 (roll INTEGER, area VARCHAR, authority VARCHAR)
### Question:
tell me the average roll for the featherston area and integrated authority.
### Answer:
SELECT AVG(roll) FROM table_name_48 WHERE area = "featherston" AND authority = "integrated"