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_name_31 (frequency INTEGER, webcast VARCHAR, callsign VARCHAR)
  ### Question:
  Which Frequency has a Webcast of •, and a Callsign of xemr?
  ### Answer:
  SELECT AVG(frequency) FROM table_name_31 WHERE webcast = "•" AND callsign = "xemr"