what is the launched date when the builder is john brown, clydebank?
CREATE TABLE table_name_57 (launched VARCHAR, builder VARCHAR)
SELECT launched FROM table_name_57 WHERE builder = "john brown, clydebank"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_57 (launched VARCHAR, builder VARCHAR) Question: what is the launched date when the builder is john brown, clydebank? [/INST] SELECT launched FROM table_name_57 WHERE builder = "john brown, clydebank" </s>