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_1997759_1 (registration VARCHAR, first_flew VARCHAR)
### Question:
what is the registration located on 31 january 1975 where first flew?
### Answer:
SELECT registration FROM table_1997759_1 WHERE first_flew = "31 January 1975"