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_88 (year INTEGER, bronze VARCHAR)
### Question:
WHAT YEAR HAS A BRONZE OF VALENTIN NOVIKOV?
### Answer:
SELECT AVG(year) FROM table_name_88 WHERE bronze = "valentin novikov"