When the team is ypiranga-sp what is the number of won games?
CREATE TABLE table_15405904_1 (won INTEGER, team VARCHAR)
SELECT MIN(won) FROM table_15405904_1 WHERE team = "Ypiranga-SP"
### Context: CREATE TABLE table_15405904_1 (won INTEGER, team VARCHAR) ### Question: When the team is ypiranga-sp what is the number of won games? ### Answer: SELECT MIN(won) FROM table_15405904_1 WHERE team = "Ypiranga-SP"