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_10722506_6 ( round_of_32 VARCHAR, conference VARCHAR )

### Question ###
Name the round of 32 in conference usa

### Accurate SQL ###

SELECT round_of_32 FROM table_10722506_6 WHERE conference = "conference USA"