What is the highest number of touchdowns that had yards of 574 and completions over 54?
CREATE TABLE "statistics" (
  "year" text,
  "comp" real,
  "att" real,
  "comppct" real,
  "yards" real,
  "td_s" real,
  "int_s" real,
  "rating" real
);
SELECT MAX("td_s") FROM "statistics" WHERE "yards"=574 AND "comp">54;