What is the lowest Greater Doubles, when Doubles, I Class is 23, and when Doubles, II Class is less than 27?
CREATE TABLE "some_differences_in_relation_to_later_ed" (
  "date" real,
  "doubles_i_class" real,
  "doubles_ii_class" real,
  "greater_doubles" real,
  "doubles" real,
  "semidoubles" real,
  "total" real
);
SELECT MIN("greater_doubles") FROM "some_differences_in_relation_to_later_ed" WHERE "doubles_i_class"=23 AND "doubles_ii_class"<27;