What is the average Silver, when Gold is less than 0?
CREATE TABLE table_name_47 (silver INTEGER, gold INTEGER)
SELECT AVG(silver) FROM table_name_47 WHERE gold < 0
### Context: CREATE TABLE table_name_47 (silver INTEGER, gold INTEGER) ### Question: What is the average Silver, when Gold is less than 0? ### Answer: SELECT AVG(silver) FROM table_name_47 WHERE gold < 0