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_13 (year INTEGER, loser VARCHAR)
### Question:
In which year is Nerida Gregory listed as the loser?
### Answer:
SELECT AVG(year) FROM table_name_13 WHERE loser = "nerida gregory"