What are the cargo tonnes when the international (non-CIS) is 297 421?
CREATE TABLE "statistics_for_airport_koltsovo" (
  "year" real,
  "total_passengers" text,
  "passenger_change" text,
  "domestic" text,
  "international_total" text,
  "international_non_cis" text,
  "aircraft_landings" text,
  "cargo_tonnes" text
);
SELECT "cargo_tonnes" FROM "statistics_for_airport_koltsovo" WHERE "international_non_cis"='297 421';