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: Sponges are subdivided into ____ classes.

Output: three


Input: Consider Input: Smoking causes lung cancer in ____ ways.

Output: two


Input: Consider Input: Caterpillars feed actively on broadleaf trees for five to ____ weeks.


Output: six