What position did Co-driver Jackie Oliver finish in the 24 hours of Le Mans?
CREATE TABLE "pedro_rodr_guez_in_porsche" (
  "year" real,
  "race" text,
  "team" text,
  "pos" text,
  "co_driver" text
);
SELECT "pos" FROM "pedro_rodr_guez_in_porsche" WHERE "race"='24 hours of le mans' AND "co_driver"='jackie oliver';