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.

Ex Input:
Some people routinely sleep only ____ hours a night but feel fine during the day.

Ex Output:
four


Ex Input:
All matter exists in ____ dimensional space, both internal and external.

Ex Output:
three


Ex Input:
Hmong folktales tell of a land of ice and snow with ____ months of light and six of darkness.

Ex Output:

six