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_23915973_1 (callsign VARCHAR, power_kw VARCHAR)
  ### Question:
  What is the callsign when power kw is 25kw?
  ### Answer:
  SELECT callsign FROM table_23915973_1 WHERE power_kw = "25kW"