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.

Input: Consider Input: Erosion is divided into ____ main categories, water and wind.

Output: two


Input: Consider Input: Hypertension afflicts about ____ in four American adults, both men and women, of all ages.

Output: one


Input: Consider Input: Some babies start sleeping through the night on their own around three or ____ months.


Output: four