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:
Marshes are shallow wetlands less than ____ meters deep.

Ex Output:
two


Ex Input:
Zygospores result from the fusion of ____ similar hyphal elements.

Ex Output:
two


Ex Input:
Tapirs have hoofed toes , with ____ toes on the front feet and three toes on the hind feet .

Ex Output:

four