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: Success is a function of ____ things.
Example Output: two

Example Input: Threshold is a value to avoid ____ divide.
Example Output: zero

Example Input: Most fatal fires kill ____ or two people only.
Example Output:
one