text: 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 employees (department_id VARCHAR, manager_id VARCHAR, employee_id VARCHAR)
  ### Question:
  Find the ids of the departments where any manager is managing 4 or more employees.
  ### Answer:
  SELECT DISTINCT department_id FROM employees GROUP BY department_id, manager_id HAVING COUNT(employee_id) >= 4