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:
Plants have roots for ____ main reasons.

Ex Output:
two


Ex Input:
Asbestos is a generic term used to describe the fibrous form of ____ different minerals.

Ex Output:
six


Ex Input:
Monarchs have a life span of ____ to eight months.

Ex Output:

seven