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_245801_1 (duration__days_ VARCHAR, crew VARCHAR)
  ### Question:
  Name the duration for  vladimir vasyutin , alexander volkov
  ### Answer:
  SELECT COUNT(duration__days_) FROM table_245801_1 WHERE crew = "Vladimir Vasyutin , Alexander Volkov"