What is the hioghest amount of silver medals for a nation ranked higher than 19 and less than 2 gold medals?
CREATE TABLE "medal_table" (
  "rank" text,
  "nation" text,
  "gold" real,
  "silver" real,
  "bronze" real,
  "total" real
);
SELECT MAX("silver") FROM "medal_table" WHERE "rank"='19' AND "gold"<2;