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

### Instruction:
What year is associated with a drama desk award ceremony and a Category of outstanding featured actress in a musical?

### Inputs:
table_name: table, columns: ['Year', 'Award Ceremony', 'Category', 'Nominee', 'Result']

### Response:
SELECT AVG Year FROM table WHERE Award Ceremony = drama desk award AND Category = outstanding featured actress in a musical