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: Insects are identified by having ____ sets of paired legs, while isopods have seven.
Example Output: three

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

Example Input: Some scholars question the existence of the first ____ emperors.
Example Output:
nine