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:
Jersey has nine breeding seabird species, of which ____ nest on the north coast.

Ex Output:
seven


Ex Input:
Germanium is in column ____ in the periodic table and has four valence electrons.

Ex Output:

four