On what tra k was the march 19 race held? 
CREATE TABLE table_2454550_1 (track VARCHAR, date VARCHAR)
SELECT track FROM table_2454550_1 WHERE date = "March 19"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_2454550_1 (track VARCHAR, date VARCHAR) Question: On what tra k was the march 19 race held?  [/INST] SELECT track FROM table_2454550_1 WHERE date = "March 19" </s>