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: Irrigation can increase land productivity by three to ____ times, especially in the north.
Example Output: seven

Example Input: Most ducks acquire breeding plumage in the fall, ____ or seven months before other birds.
Example Output: six

Example Input: Otters have ____ to three pups in late spring.
Example Output:
two

