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_8 (gold INTEGER, rank VARCHAR, silver VARCHAR)
### Question:
What is the least number of gold medals won among nations ranked 1 with no silver medals?
### Answer:
SELECT MIN(gold) FROM table_name_8 WHERE rank = 1 AND silver < 1