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_30 (silver INTEGER, nation VARCHAR, gold VARCHAR)
### Question:
How many silvers for japan (1 gold)?
### Answer:
SELECT SUM(silver) FROM table_name_30 WHERE nation = "japan" AND gold > 1