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_22 (year INTEGER, result VARCHAR, extra VARCHAR, tournament VARCHAR, venue VARCHAR)
### Question:
What is the average year that anna thompson had an 8th place result in team competition at the world cross country championships in st etienne, france with
### Answer:
SELECT AVG(year) FROM table_name_22 WHERE tournament = "world cross country championships" AND venue = "st etienne, france" AND extra = "team competition" AND result = "8th"