What are the Decima polling dates when Larry O'Brien has 37%?
CREATE TABLE "poll_results" (
  "polling_firm" text,
  "polling_dates" text,
  "bob_chiarelli" text,
  "alex_munter" text,
  "larry_o_brien" text,
  "terry_kilrea_dropped_out" text
);
SELECT "polling_dates" FROM "poll_results" WHERE "polling_firm"='decima' AND "larry_o_brien"='37%';