How many candidates had 0 percent of the vote in 1999?
CREATE TABLE table_name_71 (
    candidates VARCHAR,
    seats_won VARCHAR,
    _percentage_of_vote VARCHAR,
    election VARCHAR
)
SELECT COUNT(candidates) FROM table_name_71 WHERE _percentage_of_vote = 0 AND election = 1999 AND seats_won > 0
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: How many candidates had 0 percent of the vote in 1999? ### Input: CREATE TABLE table_name_71 (
    candidates VARCHAR,
    seats_won VARCHAR,
    _percentage_of_vote VARCHAR,
    election VARCHAR
) ### Response: SELECT COUNT(candidates) FROM table_name_71 WHERE _percentage_of_vote = 0 AND election = 1999 AND seats_won > 0