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_28039032_1 ( round VARCHAR, winners_from_previous_round VARCHAR )

### Question ###
What was the round when there were 16 winners from the previous round?

### Accurate SQL ###

SELECT round FROM table_28039032_1 WHERE winners_from_previous_round = "16"