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_63 (launched VARCHAR, laid_down VARCHAR)
### Question:
What is Launched, when Laid Down is "31 October 1981"?
### Answer:
SELECT launched FROM table_name_63 WHERE laid_down = "31 october 1981"