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 (year INTEGER, venue VARCHAR)
### Question:
What's the average of all years tournaments were hosted in Doha, Qatar?
### Answer:
SELECT AVG(year) FROM table_name_81 WHERE venue = "doha, qatar"