Which mean rank had a silver number smaller than 0?
CREATE TABLE table_name_60 (rank INTEGER, silver INTEGER)
SELECT AVG(rank) FROM table_name_60 WHERE silver < 0
### Context: CREATE TABLE table_name_60 (rank INTEGER, silver INTEGER) ### Question: Which mean rank had a silver number smaller than 0? ### Answer: SELECT AVG(rank) FROM table_name_60 WHERE silver < 0