CREATE TABLE "population" (
  "1861" real,
  "1866" real,
  "1872" real,
  "1876" real,
  "1881" real,
  "1886" real,
  "1891" real
);

Question: What is the total number of 1876(s), when 1872 is less than 1921, and when 1891 is less than 354?
SQL: SELECT COUNT("1876") FROM "population" WHERE "1872"<1921 AND "1891"<354;

Question: What is the sum of 1886(s), when 1886 is greater than 1070, and when 1891 is less than 1946?
SQL: SELECT SUM("1886") FROM "population" WHERE "1866">1070 AND "1891"<1946;

Question: What is the sum of 1891(s), when 1872 is less than 685, and when 1881 is less than 348?
SQL: SELECT SUM("1891") FROM "population" WHERE "1872"<685 AND "1881"<348;

Question: What is the sum of 1872(s), when 1866 is greater than 856, when 1861 is greater than 1906, and when 1876 is greater than 1990?
SQL: SELECT SUM("1872") FROM "population" WHERE "1866">856 AND "1861">1906 AND "1876">1990;