What is the installation date for the Delta Chapter?
CREATE TABLE table_21821014_1 (installation_date VARCHAR, chapter VARCHAR)
SELECT installation_date FROM table_21821014_1 WHERE chapter = "Delta"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21821014_1 (installation_date VARCHAR, chapter VARCHAR) Question: What is the installation date for the Delta Chapter? [/INST] SELECT installation_date FROM table_21821014_1 WHERE chapter = "Delta" </s>