What was Christian Kubusch's lane when the heat was more than 2 and time was DNS?
CREATE TABLE "heats" (
  "heat" real,
  "lane" real,
  "name" text,
  "nationality" text,
  "time" text
);
SELECT SUM("lane") FROM "heats" WHERE "time"='dns' AND "name"='christian kubusch' AND "heat">2;