What is the sum of Medium Gallup, March 2008 values where the Medium Gallup, May 2008 values are under 10?
CREATE TABLE "opinion_polls" (
  "party" text,
  "medium_gallup_march_2008" real,
  "strategic_marketing_march_2008" real,
  "ce_sid_may_2008" real,
  "medium_gallup_may_2008" real
);
SELECT SUM("medium_gallup_march_2008") FROM "opinion_polls" WHERE "medium_gallup_may_2008"<10;