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:
Niobium occurs primarily in ____ minerals, columbite and pyrochlore.

Ex Output:
two


Ex Input:
Box turtles are mature and capable of mating at ____ years old.

Ex Output:
five


Ex Input:
Animals have five senses and man ____ senses.

Ex Output:

six