On what date were 5 built with 4-4-2t wheels?
CREATE TABLE "1905_1911" (
  "class" text,
  "wheels" text,
  "date" text,
  "no_built" real,
  "loco_nos" text
);
SELECT "date" FROM "1905_1911" WHERE "no_built"=5 AND "wheels"='4-4-2t';