CREATE TABLE table_64890 ("Rank" FLOAT, "Name" CLOB, "Height" CLOB, "Highest floor" FLOAT, "City" CLOB, "Primary use" CLOB)

What is the Rank of the building that has a Highest floor larger than 50?
SELECT "Rank" FROM table_64890 WHERE "Highest floor" > '50'
SELECT "Rank" FROM "table_64890" WHERE "Highest floor" > '50'