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.

Example Input: Hydroplanes have ____ or more wetted surface areas.
Example Output: two

Example Input: China has about one in ____ of all smokers in the world.
Example Output: four

Example Input: Mature females bear ____ or even three calves a year.
Example Output:
two