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 takes (semester VARCHAR, YEAR VARCHAR)
### Question:
Find the semester and year which has the least number of student taking any class.
### Answer:
SELECT semester, YEAR FROM takes GROUP BY semester, YEAR ORDER BY COUNT(*) LIMIT 1