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_26013618_1 (date_established VARCHAR, name_of_the_nature_reserve VARCHAR)
### Question:
When was Stellbrookmoor established?
### Answer:
SELECT date_established FROM table_26013618_1 WHERE name_of_the_nature_reserve = "Stellbrookmoor"