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: Photosynthesis has ____ main sets of reactions.

Output: two


Input: Consider Input: Child care is provided for children ages six weeks through ____ years of age.

Output: four


Input: Consider Input: Most spider beetles have ____ or three generations per year.


Output: two