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.

Input: Consider Input: Presidential elections take place every ____ years.

Output: four


Input: Consider Input: Unemployment Identify the ____ types of unemployment.

Output: four


Input: Consider Input: Some homes have ____ or even four computers from which they can access the Internet.


Output: three