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:
Ocean has ____ life-important properties.

Ex Output:
two


Ex Input:
Infertility affects one in ____ couples today.

Ex Output:
five


Ex Input:
Brazil leads the world with more than ____ billion gallons of ethanol produced each year.

Ex Output:

four