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:
Erosion is divided into ____ main categories, water and wind.

Ex Output:
two


Ex Input:
Spiders have only ____ body divisions and eight legs.

Ex Output:
two


Ex Input:
Alcohol reduces the brain's ability to integrate information from the ____ senses.

Ex Output:

five