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_53 (year VARCHAR, position VARCHAR, name VARCHAR)
### Question:
What year is guard Mario Chalmers?
### Answer:
SELECT year FROM table_name_53 WHERE position = "guard" AND name = "mario chalmers"