What is the number of the sail with an overall length of 13.68?
CREATE TABLE table_25595107_2 (sail_number VARCHAR, loa__metres_ VARCHAR)
SELECT sail_number FROM table_25595107_2 WHERE loa__metres_ = "13.68"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25595107_2 (sail_number VARCHAR, loa__metres_ VARCHAR) Question: What is the number of the sail with an overall length of 13.68? [/INST] SELECT sail_number FROM table_25595107_2 WHERE loa__metres_ = "13.68" </s>