CREATE TABLE table_31731 ("Hangul" CLOB, "Hanja" CLOB, "Revised" CLOB, "McCune-Reischauer" CLOB, "Estimated distribution  ( 2000 ) *" FLOAT)

Tell me the hanja of eum
SELECT "Hanja" FROM table_31731 WHERE "Revised" = 'eum'
SELECT "Hanja" FROM "table_31731" WHERE "Revised" = 'eum'