How many viewers were there for Children of Earth of 'day one'?
CREATE TABLE table_63544 (
    "Children of Earth" text,
    "Run time" text,
    "Writer" text,
    "Director" text,
    "Original airdate" text,
    "Viewers (including HD) in millions" text
)
SELECT "Viewers (including HD) in millions" FROM table_63544 WHERE "Children of Earth" = 'day one'
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: How many viewers were there for Children of Earth of 'day one'? ### Input: CREATE TABLE table_63544 (
    "Children of Earth" text,
    "Run time" text,
    "Writer" text,
    "Director" text,
    "Original airdate" text,
    "Viewers (including HD) in millions" text
) ### Response: SELECT "Viewers (including HD) in millions" FROM table_63544 WHERE "Children of Earth" = 'day one'