How many championships were won for arena football?
CREATE TABLE table_21564794_3 (championships_in_st_louis VARCHAR, sport VARCHAR)
SELECT championships_in_st_louis FROM table_21564794_3 WHERE sport = "Arena Football"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_21564794_3 (championships_in_st_louis VARCHAR, sport VARCHAR) Question: How many championships were won for arena football? [/INST] SELECT championships_in_st_louis FROM table_21564794_3 WHERE sport = "Arena Football" </s>