CREATE TABLE "chronological" (
  "1910s" real,
  "1920s" real,
  "1930s" real,
  "1940s" real,
  "1950s" real,
  "1960s" real,
  "1970s" real,
  "1980s" real,
  "1990s" real,
  "2000s" real
);

Question: What is the corresponding 1930s for 2000 and 1940?
SQL: SELECT SUM("1930s") FROM "chronological" WHERE "2000s"=2000 AND "1940s"<1940;

Question: What would be the correct year in the 1940s, if the 1980s is before 1986, the 1990s is before 1995, the 1970s is before 1973, and the 2000s are after 2001?
SQL: SELECT "1940s" FROM "chronological" WHERE "1980s"<1986 AND "1990s"<1995 AND "1970s"<1973 AND "2000s">2001;

Question: What is the range for the 1980s that correspond to a grid 1910s of 1912, and a 1940s before 1942
SQL: SELECT AVG("1980s") FROM "chronological" WHERE "1910s"=1912 AND "1940s"<1942;

Question: what is the lowest year in the 1910s that would be in the row were the 1950s are no larger than 1952, and the 1980s are no smaller than 1981?
SQL: SELECT MIN("1910s") FROM "chronological" WHERE "1950s"<1952 AND "1980s">1981;