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: Manatees swim ____ to six miles per hour.
Example Output: two

Example Input: Eye contact is important for ____ reasons.
Example Output: two

Example Input: Family refers to up to two adults and ____ children.
Example Output:
four