What is the population of the county with an area of 9,378 km² and a population density larger than 46.7?
CREATE TABLE "by_density" (
  "rank" text,
  "county" text,
  "population_2011" real,
  "area_km" real,
  "density_2011" real
);
SELECT MIN("population_2011") FROM "by_density" WHERE "area_km"='9,378' AND "density_2011">46.7;