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_74 (gold INTEGER, nation VARCHAR, silver VARCHAR)
### Question:
What is the sum of the gold medals of the total nation, which has more than 19 silver medals?
### Answer:
SELECT SUM(gold) FROM table_name_74 WHERE nation = "total" AND silver > 19