How many episodes were put out in Region 4 on March 4, 2010?
CREATE TABLE "table1_14855908_3" (
  "dvd_name" text,
  "episodes" real,
  "region_1_can" text,
  "region_1_us" text,
  "region_2_fr" text,
  "region_4" text
);
SELECT MAX("episodes") FROM "table1_14855908_3" WHERE "region_4"='March 4, 2010';