CREATE TABLE table_name_75 (longitude INTEGER, water__sqmi_ VARCHAR(255), ansi_code VARCHAR(255))
what is the longitude when the water (sqmi) is 0.317 and the ansi code is higher than 1759695?
    
SQL: SELECT AVG(longitude) FROM table_name_75 WHERE water__sqmi_ = 0.317 AND ansi_code > 1759695