Input:

How to use roman numerals<br>Understand the concept of roman numerals. Roman numerals use fewer symbols than the number system you are used to. I is the number 1 (one), v is 5 (five), and x is 10 (ten), for example.

Sentence: Roman numerals are mostly used in European countries.

Output: It's impossible to say

Input:

How to write a letter to your best friend<br>Take notes. It can be scary to sit down to a blank page and try to write a long, meaningful letter. Even though you know your best friend well, it can still be difficult to think of what to write.

Sentence: It's not difficult to write letters to your best friend

Output: No

Input:

Essentially there were a lot of people in the community who were standing and speaking at this meeting because they wanted to warn the school board that they were not in favor of any legal action coming against the community, against the school board. They were afraid for their tax dollars.

Sentence: most of the people in the community are young.

Output: It's impossible to say

Input:

Wal-Mart Stores has asked a US federal appeals court to review a judge's order approving class-action status for a sex-discrimination lawsuit.

Sentence: Wal-Mart often faces lawsuits.

Output:
It's impossible to say