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: Reds can benefit from ____ to nine years' aging .
Example Output: seven

Example Input: HOD usually shows up as an acute lameness, often seeming to affect all ____ legs simultaneously.
Example Output: four

Example Input: Full immunity occurs about ____ weeks after injection and lasts for about five months.
Example Output:
four