Which highest 'goals against' number had wins of 19 and a 'goals for' number that was bigger than 53?
CREATE TABLE "first_phase" (
  "position" real,
  "club" text,
  "played" real,
  "points" text,
  "wins" real,
  "draws" real,
  "losses" real,
  "goals_for" real,
  "goals_against" real,
  "goal_difference" real
);
SELECT MAX("goals_against") FROM "first_phase" WHERE "wins"=19 AND "goals_for">53;