What number episode had a 4.2 rating?
CREATE TABLE table_26310 (
    "No." real,
    "Episode" text,
    "Rating" text,
    "Share" real,
    "Rating/share (18-49)" text,
    "Viewers (millions)" text,
    "Rank (timeslot)" real,
    "Rank (night)" real
)
SELECT MIN("No.") FROM table_26310 WHERE "Rating" = '4.2'
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: What number episode had a 4.2 rating? ### Input: CREATE TABLE table_26310 (
    "No." real,
    "Episode" text,
    "Rating" text,
    "Share" real,
    "Rating/share (18-49)" text,
    "Viewers (millions)" text,
    "Rank (timeslot)" real,
    "Rank (night)" real
) ### Response: SELECT MIN("No.") FROM table_26310 WHERE "Rating" = '4.2'