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

### Instruction:
Participation as of actor, film editor has what average year?

### Inputs:
table_name: table, columns: ['Year', 'English title', 'Original title', 'Country', 'Length', 'Participation as']

### Response:
SELECT AVG Year FROM table WHERE Participation as = actor, film editor