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_99 (year INTEGER, venue VARCHAR, margin VARCHAR)
### Question:
Name the average year for brookvale oval and margin more than 46
### Answer:
SELECT AVG(year) FROM table_name_99 WHERE venue = "brookvale oval" AND margin > 46