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: Seasonal records indicate that, in most years, ____ generations occur.
Example Output: two

Example Input: Cricket usually lays about five eggs, one every other day for ____ days.
Example Output: ten

Example Input: Arachnids are terrestrial arthropods, which have simple eyes and ____ pairs of legs.
Example Output:
four