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:
Spermatogenesis creates ____ sperm of equal size.

Ex Output:
four


Ex Input:
Echinoderms have radial symmetry , many having ____ or multiples of five arms.

Ex Output:
five


Ex Input:
Vaginal cancer is rare, accounting for only ____ percent of all gynecologic cancers.

Ex Output:

three