CREATE TABLE table_6957 ("Date" CLOB, "Title" CLOB, "Director" CLOB, "Producer" CLOB, "Production Cost" CLOB, "Singapore Gross" CLOB)

What date was the Singapore Gross 1999?
SELECT "Date" FROM table_6957 WHERE "Singapore Gross" = '1999'
SELECT "Date" FROM "table_6957" WHERE "Singapore Gross" = '1999'