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:
Women normally have ____ ovaries.

Ex Output:
two


Ex Input:
Dogs have to be ____ months old before they are spayed or neutered.

Ex Output:
six


Ex Input:
Medications fall into ____ risk categories when considering damage to a developing fetus.

Ex Output:

four