CREATE TABLE table_name_31 (area__km_2__ INT, most_spoken_language VARCHAR, place VARCHAR)

What is the lowest area for cannonvale that speaks afrikaans?
SELECT MIN(area__km_2__) FROM table_name_31 WHERE most_spoken_language = "afrikaans" AND place = "cannonvale"
SELECT MIN("area__km_2__") FROM "table_name_31" WHERE "afrikaans" = "most_spoken_language" AND "cannonvale" = "place"