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"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17766232_7 (radio_commentator VARCHAR, final_television_commentator VARCHAR) Question: Who was the radio commentator when the final television commentator was John Dunn?  [/INST] SELECT radio_commentator FROM table_17766232_7 WHERE final_television_commentator = "John Dunn" </s>