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:
Presidential elections take place every ____ years.

Ex Output:
four


Ex Input:
Early childhood refers to the time period between birth and ____ years of age.

Ex Output:
eight


Ex Input:
Smoking is responsible for more than one out of every ____ deaths in the United States.

Ex Output:

five