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_23279434_1 (season__number VARCHAR, written_by VARCHAR, series__number VARCHAR)
### Question:
What seasons  in series 7 did David E. Kelley write ?
### Answer:
SELECT COUNT(season__number) FROM table_23279434_1 WHERE written_by = "David E. Kelley" AND series__number = 7