What is the 2010 population of the municipality with 31 barangays?
CREATE TABLE "subdivisions" (
  "municipality" text,
  "no_of_barangays" real,
  "area_hectares" real,
  "population_2007" real,
  "population_2010" real,
  "pop_density_per_km_2" text
);
SELECT "population_2010" FROM "subdivisions" WHERE "no_of_barangays"=31;