CREATE TABLE table_name_11 (elevation__m_ INTEGER, prominence__m_ VARCHAR, col__m_ VARCHAR, peak VARCHAR)
What is the highest elevation in m of the bon irau peak, which has a col greater than 0 m and a prominence less than 1,900 m?
SELECT MAX(elevation__m_) FROM table_name_11 WHERE col__m_ > 0 AND peak = "bon irau" AND prominence__m_ < 1 OFFSET 900