How many mixed doubles were there in the year that Olga Koseli won the women's singles?
CREATE TABLE table_15002177_1 (mixed_doubles VARCHAR, womens_singles VARCHAR)
SELECT COUNT(mixed_doubles) FROM table_15002177_1 WHERE womens_singles = "Olga Koseli"
### Context: CREATE TABLE table_15002177_1 (mixed_doubles VARCHAR, womens_singles VARCHAR) ### Question: How many mixed doubles were there in the year that Olga Koseli won the women's singles? ### Answer: SELECT COUNT(mixed_doubles) FROM table_15002177_1 WHERE womens_singles = "Olga Koseli"