What is the average Gold, when Nation is Yugoslavia, and when Silver is greater than 0?
CREATE TABLE table_name_28 (gold INTEGER, nation VARCHAR, silver VARCHAR)
SELECT AVG(gold) FROM table_name_28 WHERE nation = "yugoslavia" AND silver > 0
### Context: CREATE TABLE table_name_28 (gold INTEGER, nation VARCHAR, silver VARCHAR) ### Question: What is the average Gold, when Nation is Yugoslavia, and when Silver is greater than 0? ### Answer: SELECT AVG(gold) FROM table_name_28 WHERE nation = "yugoslavia" AND silver > 0