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: Ozone leaves ____ by-products except pure oxygen.
Example Output: no

Example Input: Most ducks acquire breeding plumage in the fall, ____ or seven months before other birds.
Example Output: six

Example Input: Color blindness is fairly common, affecting about ____ percent of all humans.
Example Output:
nine