Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_28365816_2 ( conference VARCHAR, tournament_winner VARCHAR )

### Question ###
During what conference is North Carolina listed as the tournament winner?

### Accurate SQL ###

SELECT conference FROM table_28365816_2 WHERE tournament_winner = "North Carolina"