CREATE TABLE table_name_55 (race_4 VARCHAR2, race_3 VARCHAR2, race_2 VARCHAR2)

What's the value for race 4 when race 3 is dns and race 2 is 27?
SELECT race_4 FROM table_name_55 WHERE race_3 = "dns" AND race_2 = "27"
SELECT "race_4" FROM "table_name_55" WHERE "27" = "race_2" AND "dns" = "race_3"