CREATE TABLE "most_appearances" (
  "num" real,
  "name" text,
  "nation" text,
  "years" text,
  "league" text,
  "fa_cup" text,
  "league_cup" text,
  "other_c" text,
  "total" text
);

Question: Name the league cup for northern ireland
SQL: SELECT "league_cup" FROM "most_appearances" WHERE "nation"='Northern Ireland';