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:
Wind is renewable, and produces ____ emissions or by-products.

Ex Output:
no


Ex Input:
Aardvarks have ____ toes on the front feet and five toes on their back feet.

Ex Output:
four


Ex Input:
Gravity is the force of attraction between any ____ objects.

Ex Output:

two