Input:

How to call vietnam<br>Dial your country's exit code. When you want to call someone in vietnam and you're in a different country, the first thing you'll need to do is dial your country's exit code in order to get the call out of your country. These vary from country to country but many are 0-0 or 0-1-1.

Sentence: It is expensive to call vietnam.

Output: It's impossible to say

Input:

How to become a contract delivery service for the united states postal service<br>Make sure you understand the requirements associated with being a contract delivery service. [substeps] You are required to sort mail for your route, drive to your route in your own vehicle, deliver mail to all addresses, and return to the post office at the end of your day. Decide if you are available to work the hours the usps requires of you.

Sentence: You must decide the work hours yourself for the USPS.

Output: No

Input:

Metropolitan police personnel specializing in explosives defused the rockets. Some 100 people were working inside the plant.

Sentence: the amount of people working in the plant was 108 minus 8

Output: Yes

Input:

But for them, they get the benefit of the longer term if you don't apply it to an existing copyright. I mean, if you say you need 70 years because of changes in the economy to encourage works, you grant 70 for the future, but why does that, making that apply to somebody provided him?

Sentence: Longer term benefits come if you don't apply the existing copyright.

Output:
Yes