How many contestants were there when the runner-up was Sérgio Abreu? 
CREATE TABLE table_25214321_1 (contestants INTEGER, runner_up VARCHAR)
SELECT MAX(contestants) FROM table_25214321_1 WHERE runner_up = "Sérgio Abreu"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_25214321_1 (contestants INTEGER, runner_up VARCHAR) Question: How many contestants were there when the runner-up was Sérgio Abreu?  [/INST] SELECT MAX(contestants) FROM table_25214321_1 WHERE runner_up = "Sérgio Abreu" </s>