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:
Sponges are subdivided into ____ classes.

Ex Output:
three


Ex Input:
Calcite makes up ____ well known rocks limestone and marble.

Ex Output:
two


Ex Input:
Alcoholism is about ____ times more common in men than in women.

Ex Output:

four