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_76 (win__percentage INTEGER, gb_ VARCHAR, d_ VARCHAR)
### Question:
What is the average win percentage of a season with a GB of 5?
### Answer:
SELECT AVG(win__percentage) FROM table_name_76 WHERE gb_[d_] = "5"