which is the number of the season episode whose writer is R. Scott Gemmill and the Director is Ray Austin?
CREATE TABLE "table1_228973_3" (
  "no_in_series" real,
  "no_in_season" real,
  "title" text,
  "directed_by" text,
  "written_by" text,
  "original_air_date" text
);
SELECT "no_in_season" FROM "table1_228973_3" WHERE "written_by"='R. Scott Gemmill' AND "directed_by"='Ray Austin';