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_name_17 (producer VARCHAR, author VARCHAR, narrator VARCHAR, year VARCHAR)
### Question:
who is the producer when the narrator is katherine kellgren, the year is before 2013 and the author is karen cushman?
### Answer:
SELECT producer FROM table_name_17 WHERE narrator = "katherine kellgren" AND year < 2013 AND author = "karen cushman"