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_name_8 ( round INTEGER, time VARCHAR, event VARCHAR )

### Question ###
What is the lwoest round of wild bill's fight night 21 at 5:00?

### Accurate SQL ###

SELECT MIN(round) FROM table_name_8 WHERE time = "5:00" AND event = "wild bill's fight night 21"