Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_27599216_6 (institution VARCHAR, football_stadium VARCHAR)

### Question ###
How many institutions are shown for the football stadium of mosaic stadium?

### Accurate SQL ###

SELECT COUNT(institution) FROM table_27599216_6 WHERE football_stadium = "Mosaic Stadium"