Who became the champion for the 1984 Grand Prix where Marty Davis was the runner-up?
CREATE TABLE table_29295463_9 (champion VARCHAR, runner_up VARCHAR)
SELECT champion FROM table_29295463_9 WHERE runner_up = "Marty Davis"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_29295463_9 (champion VARCHAR, runner_up VARCHAR) Question: Who became the champion for the 1984 Grand Prix where Marty Davis was the runner-up? [/INST] SELECT champion FROM table_29295463_9 WHERE runner_up = "Marty Davis" </s>