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, position VARCHAR, overall VARCHAR)
### Question:
What is the highest round with a guard position and an overall greater than 71?
### Answer:
SELECT MAX(round) FROM table_name_21 WHERE position = "guard" AND overall > 71