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.

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

Ex Output:
four


Ex Input:
Most bioluminescence is blue for ____ reasons.

Ex Output:
two


Ex Input:
Bluegills average ____ to ten inches in length.

Ex Output:

four