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_23394920_1 (station_type VARCHAR, callsign VARCHAR)
  ### Question:
  When dwhr-tv is the call sign how many station types are there?
  ### Answer:
  SELECT COUNT(station_type) FROM table_23394920_1 WHERE callsign = "DWHR-TV"