Input:

US Secretary of Defense James Mattis prepares to welcome Vice President Mike Pence to the Pentagon in Arlington, Virginia, on Thursday, Dec. 20. EFE-EPA/Erik S. Lesser US President Donald Trump announced Thursday that Gen. James Mattis will leave the post of defense secretary. "General Jim Mattis will be retiring, with distinction, at the end of February, after having served my Administration as Secretary of Defense for the past two years," Trump wrote on Twitter.

Sentence: US Secretary of Defense James Mattis has been to Canada.

Output: It's impossible to say

Input:

Yes, but all of the history of the development of these clauses suggests that -- and this Court has indicated in its decisions with respect to copyright, that the Framers were concerned and the Congress is legitimately concerned not just in providing the spark of creativity, but to make sure that that's distributed widely and available, and there may be many reasons why -- we're -- we --

Sentence: These clauses were developed through history.

Output: Yes

Input:

How to prevent worms in dogs<br>Clean your dog's living area on a regular basis to remove feces and other waste materials. Dogs may become infected with worms from old feces that remains in your backyard. Use a poop scooper to clean up your dog's feces every day.

Sentence: worms cause no problems for dogs

Output: No

Input:

Foreign Ministers of the 16 NATO member countries met early this morning with their Russian counterpart, Yevgeny Primakov, in Berlin in a bid to improve NATO-Russia relations.

Sentence: berlin is considered neutral ground

Output:
It's impossible to say