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_26375386_28 (rank_by_average VARCHAR, couple VARCHAR)
### Question:
How many ranks by average for the couple Tana and Stuart?
### Answer:
SELECT COUNT(rank_by_average) FROM table_26375386_28 WHERE couple = "Tana and Stuart"