What is the Runner(s)-up of the Kemper Open Tournament?
CREATE TABLE "pga_tour_wins_7" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "runner_s_up" FROM "pga_tour_wins_7" WHERE "tournament"='kemper open';