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: Most children recover completely in ____ to three months.
Example Output: two

Example Input: Llamas stand about ____ feet high at the shoulders.
Example Output: four

Example Input: Benzene burns quite well because it's built around rings of ____ carbon atoms.
Example Output:
six