CREATE TABLE "table1_19897294_4" (
  "no_overall" text,
  "no_in_series" real,
  "family_families" text,
  "location_s" text,
  "original_air_date" text
);

Question: How many series are there total?
SQL: SELECT MAX("no_in_series") FROM "table1_19897294_4";

Question: What family had a no.overall of UK10?
SQL: SELECT "family_families" FROM "table1_19897294_4" WHERE "no_overall"='UK10';