What is the name of the Cobourg, ON restaurant that had Robin de Groot as designer?
CREATE TABLE "season_1" (
  "restaurant_name" text,
  "original_name" text,
  "location" text,
  "chef" text,
  "designer" text,
  "still_open" text
);
SELECT "restaurant_name" FROM "season_1" WHERE "designer"='robin de groot' AND "location"='cobourg, on';