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 (total INTEGER, snatch VARCHAR, event VARCHAR, clean_ VARCHAR, _jerk VARCHAR)
### Question:
What is the lowest total that had less than 170 snatches, 56 kg events and less than 145 clean & jerk?
### Answer:
SELECT MIN(total) FROM table_name_21 WHERE snatch < 170 AND event = "56 kg" AND clean_ & _jerk < 145