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_57 (lane INTEGER, nationality VARCHAR)
  ### Question:
  What is the average Lane where Belarus is the nationality?
  ### Answer:
  SELECT AVG(lane) FROM table_name_57 WHERE nationality = "belarus"