SCHEMA:
CREATE TABLE table_name_29 (date VARCHAR, place VARCHAR, race_winners VARCHAR)
USER:
What date has a place of chernivtsi, and a race winners of etienne bax / kaspars stupelis? What

QUERY:
SELECT date FROM table_name_29 WHERE place = "chernivtsi" AND race_winners = "etienne bax / kaspars stupelis"