Is the restaurant still open that had the original name of n/a, location of toronto, on and the designer meredith heron?
CREATE TABLE "season_5" (
  "restaurant_name" text,
  "original_name" text,
  "location" text,
  "chef" text,
  "designer" text,
  "still_open" text
);
SELECT "still_open" FROM "season_5" WHERE "original_name"='n/a' AND "location"='toronto, on' AND "designer"='meredith heron';