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_78 (time VARCHAR, method VARCHAR, opponent VARCHAR)
### Question:
How long is the ko (punch) fight against scott smith?
### Answer:
SELECT time FROM table_name_78 WHERE method = "ko (punch)" AND opponent = "scott smith"