CREATE TABLE "list" (
  "name" text,
  "population_2011" real,
  "population_2006" real,
  "change_pct" real,
  "area_km" real,
  "population_density" real
);

Question: What was the area in Glenella with a population of 522 in 2011?
SQL: SELECT AVG("area_km") FROM "list" WHERE "name"='glenella' AND "population_2011"<522;

Question: What is the population density of Siglunes when the change was smaller than -8.1 percent?
SQL: SELECT COUNT("population_density") FROM "list" WHERE "name"='siglunes' AND "change_pct"<-8.1;