What is the highest Sack with an Assisted larger than 4, with TD's smaller than 0?
CREATE TABLE "defense" (
  "player" text,
  "tackles" real,
  "solo" real,
  "assisted" real,
  "sack" real,
  "yards" real,
  "td_s" real
);
SELECT MAX("sack") FROM "defense" WHERE "assisted">4 AND "td_s"<0;