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:
Female smokers enter menopause an average of ____ years earlier than nonsmokers.

Ex Output:
five


Ex Input:
Some programming languages have ____ or more standards .

Ex Output:
two


Ex Input:
Most linguists organize the African languages into ____ major language families.

Ex Output:

four