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: Some babies start sleeping through the night on their own around three or ____ months.
Example Output: four

Example Input: Hoatzin has typical foot with ____ toes forwards and one backwards.
Example Output: three

Example Input: House wrens are small birds, ____ and a half to five and a four inches in length.
Example Output:
four