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: Earthquakes are most frequent where ____ or more plates meet.
Example Output: two

Example Input: Some nurseries only take children aged ____ years and over.
Example Output: two

Example Input: Cats have five toes on each front paw, but only ____ toes on each back paw.
Example Output:
four