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:
Female smokers enter menopause an average of ____ years earlier than nonsmokers.

Ex Output:
five


Ex Input:
Environmentalists warn that ____ turtle species are in severe decline from over-exploitation.

Ex Output:
six


Ex Input:
Gluons have two colors, ____ normal color and one anti-color.

Ex Output:

one