How many points under par was the winner of the Miyagi TV Cup Dunlop Ladies Open?
CREATE TABLE "jlpga_tour_15" (
  "no" real,
  "date" text,
  "tournament" text,
  "winning_score" text,
  "to_par" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "to_par" FROM "jlpga_tour_15" WHERE "tournament"='Miyagi TV Cup Dunlop Ladies Open';