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_27969432_3 (original_air_date VARCHAR, written_by VARCHAR)
### Question:
How many episodes were written by david j. north & janet tamaro?
### Answer:
SELECT COUNT(original_air_date) FROM table_27969432_3 WHERE written_by = "David J. North & Janet Tamaro"