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: Human malaria is caused by ____ species of Plasmodium . .

Output: four


Input: Consider Input: Photons have no mass and ____ electrical charge.

Output: no


Input: Consider Input: Rodents have ____ toes on their front feet and five on the hind feet.


Output: four