CREATE TABLE "complete_world_championship_formula_one_" (
  "year" real,
  "entrant" text,
  "chassis" text,
  "engine" text,
  "pts" real
);

Question: Who is the entrant with a cooper t43 chassis before 1958?
SQL: SELECT "entrant" FROM "complete_world_championship_formula_one_" WHERE "year"<1958 AND "chassis"='cooper t43';