Where was the episode with series number US9 filmed?
CREATE TABLE "table1_19897294_10" (
  "no_in_series" text,
  "no_in_season" real,
  "family_families" text,
  "location_s" text,
  "original_air_date" text
);
SELECT "location_s" FROM "table1_19897294_10" WHERE "no_in_series"='US9';