The state of Aguascalientes has an area (km²) larger than 151,571 and a density greater than 80.9, what is the rank?
CREATE TABLE "by_density" (
  "rank" text,
  "state" text,
  "population" real,
  "area_km" real,
  "density" real
);
SELECT "rank" FROM "by_density" WHERE "area_km">'151,571' AND "density">80.9 AND "state"='aguascalientes';