Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_21 (round INTEGER, method VARCHAR, opponent VARCHAR)
### Question:
What's the lowest round with the opponent John Howard that had a method of Decision (unanimous)?
### Answer:
SELECT MIN(round) FROM table_name_21 WHERE method = "decision (unanimous)" AND opponent = "john howard"