What was Thierry Henry's average goal when his rank was higher than 7?
CREATE TABLE "top_scorers_in_uefa_club_competitions" (
  "rank" real,
  "player" text,
  "goals" real,
  "games" real,
  "debut_in_europe" real
);
SELECT AVG("goals") FROM "top_scorers_in_uefa_club_competitions" WHERE "player"='thierry henry' AND "rank">7;