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_14903491_1 (year VARCHAR, womens_doubles VARCHAR, mens_singles VARCHAR)
### Question:
Name the number of years for womens doubles being  diana koleva emilia dimitrova and  jeliazko valkov
### Answer:
SELECT COUNT(year) FROM table_14903491_1 WHERE womens_doubles = "Diana Koleva Emilia Dimitrova" AND mens_singles = "Jeliazko Valkov"