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_17521433_1 (average VARCHAR, evening_gown VARCHAR)
### Question:
What was the average score for the country with the evening gown score of 9.100?
### Answer:
SELECT COUNT(average) FROM table_17521433_1 WHERE evening_gown = "9.100"