What machine has 5 as the place?
CREATE TABLE "1972_isle_of_man_junior_tt_350cc_final_s" (
  "place" real,
  "rider" text,
  "country" text,
  "machine" text,
  "speed" text,
  "time" text,
  "points" real
);
SELECT "machine" FROM "1972_isle_of_man_junior_tt_350cc_final_s" WHERE "place"=5;