the first episode in this season had what number in the series?
CREATE TABLE table_73891 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
)
SELECT MIN("No. in series") FROM table_73891
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: the first episode in this season had what number in the series? ### Input: CREATE TABLE table_73891 (
    "No. in series" real,
    "No. in season" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text
) ### Response: SELECT MIN("No. in series") FROM table_73891