In what place did hubert green score below 70 in the united states?
CREATE TABLE "first_round" (
  "place" text,
  "player" text,
  "country" text,
  "score" real,
  "to_par" text
);
SELECT "place" FROM "first_round" WHERE "score"<70 AND "country"='united states' AND "player"='hubert green';