Given a sentence, fill out the missing word with a 'no' or a number (between zero and ten). You should write the numbers with english alphabet, like: four instead of 4.

Example Input: Systems information is ____ dimensional because it varies with time.
Example Output: four

Example Input: Babies crawl into a pouch on the mother's belly and stay there ____ months.
Example Output: four

Example Input: Salvation also is ascribed to all the ____ persons, who are equally concerned in it.
Example Output:
three