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_50 (title VARCHAR, weeks_on_chart__uk_ VARCHAR)
### Question:
Which single was on the Charts for 23 weeks ?
### Answer:
SELECT title FROM table_name_50 WHERE weeks_on_chart__uk_ = 23