Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Name the number of years for womens doubles being  diana koleva emilia dimitrova and  jeliazko valkov

### Inputs:
table_name: table, columns: ['Year', 'Mens singles', 'Womens singles', 'Mens doubles', 'Womens doubles', 'Mixed doubles']

### Response:
SELECT COUNT Year FROM table WHERE Womens doubles = Diana Koleva Emilia Dimitrova AND Mens singles = Jeliazko Valkov