CREATE TABLE table_name_78 (year_named NUMBER, latitude VARCHAR2, diameter__km_ VARCHAR2)

What year was the geological feature with a latitude of 76.0n and a diameter larger than 548 km was named?
SELECT MAX(year_named) FROM table_name_78 WHERE latitude = "76.0n" AND diameter__km_ > 548
SELECT MAX("year_named") FROM "table_name_78" WHERE "76.0n" = "latitude" AND "diameter__km_" > 548