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_27599216_6 (institution VARCHAR, football_stadium VARCHAR)
### Question:
How many institutions are shown for the football stadium of mosaic stadium?
### Answer:
SELECT COUNT(institution) FROM table_27599216_6 WHERE football_stadium = "Mosaic Stadium"