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: Most newborns nurse every one to ____ hours, even at night.
Example Output: three

Example Input: Marriage is the legal union of ____ people.
Example Output: two

Example Input: Basaltic eruptions can produce ____ different types of flow.
Example Output:
two