CREATE TABLE "ranking" (
  "rank" real,
  "centre" text,
  "country" text,
  "rating" real,
  "change" real
);

Question: Which Rank is the highest one that has a Change smaller than 44, and a Centre of buenos aires, and a Rating larger than 628?
SQL: SELECT MAX("rank") FROM "ranking" WHERE "change"<44 AND "centre"='buenos aires' AND "rating">628;

Question: Which Centre has a Rank of 42?
SQL: SELECT "centre" FROM "ranking" WHERE "rank"=42;

Question: Which Rating has a Centre of helsinki?
SQL: SELECT SUM("rating") FROM "ranking" WHERE "centre"='helsinki';

Question: Which Change is the average one that has a Centre of buenos aires, and a Rank smaller than 46?
SQL: SELECT AVG("change") FROM "ranking" WHERE "centre"='buenos aires' AND "rank"<46;