What company constrcuted the vehicle with a circuit of oulton park on 15 april?
CREATE TABLE table_name_17 (constructor VARCHAR, circuit VARCHAR, date VARCHAR)
SELECT constructor FROM table_name_17 WHERE circuit = "oulton park" AND date = "15 april"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_17 (constructor VARCHAR, circuit VARCHAR, date VARCHAR) Question: What company constrcuted the vehicle with a circuit of oulton park on 15 april? [/INST] SELECT constructor FROM table_name_17 WHERE circuit = "oulton park" AND date = "15 april" </s>