For the tournament played on Jul 4, 1982, what was the winning score?
CREATE TABLE "pga_tour_wins_16" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "winning_score" FROM "pga_tour_wins_16" WHERE "date"='jul 4, 1982';