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:
Ozone is formed of ____ atoms of oxygen.

Ex Output:
three


Ex Input:
Buses are ____ times as fuel efficient as cars.

Ex Output:
five


Ex Input:
Latex allergy affects approximately ____ million people in the United States.

Ex Output:

three