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 table_21636599_2 (insurgents VARCHAR, total_per_period VARCHAR)
  ### Question:
  How many insurgents are there when the total per period is 156?
  ### Answer:
  SELECT insurgents FROM table_21636599_2 WHERE total_per_period = 156