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:
Water consists of ____ hydrogen and one oxygen atom.

Ex Output:
two


Ex Input:
Comprehension is the second of the ____ elements of the informed consent process.

Ex Output:
three


Ex Input:
Prairie meadows require ____ fertilizers or fungicides, and few, if any, herbicides.

Ex Output:

no