CREATE TABLE table_44304 ("Rank" FLOAT, "Country" CLOB, "Miss United Continent" FLOAT, "Virreina" FLOAT, "1st RU" FLOAT, "2nd RU" FLOAT, "3rd RU" FLOAT, "4th RU" FLOAT, "Semifinalists" FLOAT, "Total" FLOAT)

What's the greatest 1st RU that has a 2nd RU less than 0?
SELECT MAX("1st RU") FROM table_44304 WHERE "2nd RU" < '0'
SELECT MAX("1st RU") FROM "table_44304" WHERE "2nd RU" < '0'