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_name_86 (launched VARCHAR, fleet VARCHAR, number VARCHAR)
### Question:
when was the number l6, with a fleet of black sea, launched?
### Answer:
SELECT launched FROM table_name_86 WHERE fleet = "black sea" AND number = "l6"