Who was the challenger when winner was kimio nonaga?
CREATE TABLE table_23982399_12 (challenger VARCHAR, winner VARCHAR)
SELECT challenger FROM table_23982399_12 WHERE winner = "Kimio Nonaga"
### Context: CREATE TABLE table_23982399_12 (challenger VARCHAR, winner VARCHAR) ### Question: Who was the challenger when winner was kimio nonaga? ### Answer: SELECT challenger FROM table_23982399_12 WHERE winner = "Kimio Nonaga"