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: Divorce affects one out of every ____ marriages today.
Example Output: four

Example Input: Some species take ____ to two years, or even more.
Example Output: one

Example Input: Real craters have ____ distinct morphologies.
Example Output:
two