What is the total number of Tropical Lows for more than 11 tropical cyclones in 1998–99, and a Severe Tropical Cyclones larger than 9?
CREATE TABLE "1990s" (
  "season" text,
  "tropical_lows" real,
  "tropical_cyclones" real,
  "severe_tropical_cyclones" real,
  "strongest_storm" text
);
SELECT COUNT("tropical_lows") FROM "1990s" WHERE "tropical_cyclones">11 AND "season"='1998–99' AND "severe_tropical_cyclones">9;