What Rider had a Time of 1:01.50.57?
CREATE TABLE "2008_race_a_tt_final_standings" (
  "rank" real,
  "rider" text,
  "team" text,
  "speed" text,
  "time" text
);
SELECT "rider" FROM "2008_race_a_tt_final_standings" WHERE "time"='1:01.50.57';