CREATE TABLE table_203_592 (id NUMBER, "institution" CLOB, "location" CLOB, "athletic nickname" CLOB, "undergraduate enrollment" NUMBER, "graduate enrollment" NUMBER, "total enrollment" NUMBER, "2013 endowment\ ( and us rank ) " CLOB, "academic staff" NUMBER, "motto" CLOB)

colombia has the highest graduate enrollment at 15,760 . what school has the next highest ?
SELECT "institution" FROM table_203_592 WHERE "graduate enrollment" < (SELECT "graduate enrollment" FROM table_203_592 WHERE "institution" = 'columbia university') ORDER BY "graduate enrollment" DESC LIMIT 1
SELECT "institution" FROM "table_203_592" WHERE "graduate enrollment" < (SELECT "graduate enrollment" FROM "table_203_592" WHERE "institution" = 'columbia university') ORDER BY "graduate enrollment" DESC FETCH FIRST 1 ROWS ONLY