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

### Instruction:
who is the producer when the narrator is katherine kellgren, the year is before 2013 and the author is karen cushman?

### Inputs:
table_name: table, columns: ['Year', 'Title', 'Producer', 'Narrator', 'Author', 'Citation']

### Response:
SELECT Producer FROM table WHERE Narrator = katherine kellgren AND Year < 2013 AND Author = karen cushman