Who was the radio commentator when the final television commentator was John Dunn?
CREATE TABLE table_17766232_7 (
    radio_commentator VARCHAR,
    final_television_commentator VARCHAR
)
SELECT radio_commentator FROM table_17766232_7 WHERE final_television_commentator = "John Dunn"
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: Who was the radio commentator when the final television commentator was John Dunn? ### Input: CREATE TABLE table_17766232_7 (
    radio_commentator VARCHAR,
    final_television_commentator VARCHAR
) ### Response: SELECT radio_commentator FROM table_17766232_7 WHERE final_television_commentator = "John Dunn"