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_1206583_2 (commissioned VARCHAR, builder VARCHAR, name VARCHAR)
### Question:
What are the commissioned for scotts, greenock and chieftain?
### Answer:
SELECT commissioned FROM table_1206583_2 WHERE builder = "Scotts, Greenock" AND name = "Chieftain"