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 people become sick ____ to seven days after infection.
Example Output: two

Example Input: Amphibians have ____ legs, and often look like reptiles.
Example Output: four

Example Input: Baseball has ____ coaches and softball has four coaches.
Example Output:
four