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_81 (losses INTEGER, wins VARCHAR, league VARCHAR, season VARCHAR)
### Question:
What is the losses in the NFL in the 2011 season with less than 13 wins?
### Answer:
SELECT AVG(losses) FROM table_name_81 WHERE league = "nfl" AND season = 2011 AND wins < 13