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: Tin exists in ____ allotropic forms.
Example Output: three

Example Input: Animals exhibit ____ patterns for bringing sperm and eggs together.
Example Output: two

Example Input: Vision problems affect one in ____ school-aged children.
Example Output:
four

