CREATE TABLE "cities_and_towns" (
  "city" text,
  "2011_estimate" real,
  "2010_census" real,
  "2000_census" text,
  "county" text
);

Question: What was the 2010 census when the 2011 estimate was 410?
SQL: SELECT SUM("2010_census") FROM "cities_and_towns" WHERE "2011_estimate"=410;