CREATE TABLE "see_also" (
  "author_editor_source" text,
  "year_of_publication" text,
  "countries_sampled" real,
  "world_ranking_1" text,
  "ranking_in_latin_america_2" real
);

Question: Who is the Author/Editor/Source for more than 100 countries sampled and has a 35 world ranking?
SQL: SELECT "author_editor_source" FROM "see_also" WHERE "world_ranking_1"='35' AND "countries_sampled">100;

Question: How many countries sampled has a world ranking of 33 in 2010 and less than 3 ranking in Latin America?
SQL: SELECT SUM("countries_sampled") FROM "see_also" WHERE "year_of_publication"='2010' AND "world_ranking_1"='33' AND "ranking_in_latin_america_2"<3;

Question: What's the world ranking in 2011 having more than 142 countries sampled, and more than a 3 for ranking in Latin America?
SQL: SELECT "world_ranking_1" FROM "see_also" WHERE "year_of_publication"='2011' AND "ranking_in_latin_america_2">3 AND "countries_sampled">142;