CREATE TABLE table_204_751 (id DECIMAL, "date" TEXT, "train" TEXT, "location" TEXT, "present location" TEXT, "comments" TEXT, "top speed  ( km/h ) " TEXT)

what train was developed after the erlangener erprobungstrager ?
SELECT "train" FROM table_204_751 WHERE id = (SELECT id FROM table_204_751 WHERE "train" = 'erlangener erprobungstrager (eet 01)') + 1
SELECT "train" FROM "table_204_751" WHERE "id" = (SELECT "id" FROM "table_204_751" WHERE "train" = 'erlangener erprobungstrager (eet 01)') + 1