CREATE TABLE table_203_303 (id NUMBER, "tribunal" CLOB, "number of autos da fe" NUMBER, "executions in persona" NUMBER, "executions in effigie" NUMBER, "penanced" NUMBER, "total" NUMBER)

which tribunal sentenced the largest number of executions ?
SELECT "tribunal" FROM table_203_303 ORDER BY "total" DESC LIMIT 1
SELECT "tribunal" FROM "table_203_303" ORDER BY "total" DESC FETCH FIRST 1 ROWS ONLY