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: All matter exists in ____ dimensional space, both internal and external.
Example Output: three

Example Input: Philosophy has ____ axioms since it is simply what reason knows by means of concepts.
Example Output: no

Example Input: Oxygen toxicity has ____ chief manifestations.
Example Output:
three