I want to know the sum of points with a previous rank of 3
CREATE TABLE "individual_2007_uci_pro_tour_standings_a" (
  "rank" real,
  "previous_rank" text,
  "name" text,
  "nationality" text,
  "team" text,
  "points" real
);
SELECT SUM("points") FROM "individual_2007_uci_pro_tour_standings_a" WHERE "previous_rank"='3';