What is the sum of time with a lane larger than 6, a nationality of canada, and the react smaller than 0.151?
CREATE TABLE "heat_1" (
  "rank" real,
  "lane" real,
  "athlete" text,
  "nationality" text,
  "time" real,
  "react" real
);
SELECT SUM("time") FROM "heat_1" WHERE "lane">6 AND "nationality"='canada' AND "react"<0.151;