Table schema:
CREATE TABLE table_name_28 (no_5 VARCHAR, no_9 VARCHAR, no_6 VARCHAR, no_4 VARCHAR)

Question: Name the No. 5 which has a No. 6 of ethan, and a No. 4 of william, and a No. 9 of john?
SQL: SELECT no_5 FROM table_name_28 WHERE no_6 = "ethan" AND no_4 = "william" AND no_9 = "john"