Which Visiting Team has a Stadium of servus centre on march 7?
CREATE TABLE "regular_season_schedule" (
  "date" text,
  "home_team" text,
  "score" text,
  "visiting_team" text,
  "stadium" text
);
SELECT "visiting_team" FROM "regular_season_schedule" WHERE "stadium"='servus centre' AND "date"='march 7';