Input: 

During the years between World War I and World War II, a great lesson was learned by our military leaders and the people of the United States. The lesson was that in the aftermath of World War I, we kind of turned our backs and left them to their own devices and they brewed up a lot of trouble that quickly became World War II.

Sentence: Them refers to China

Output: It's impossible to say


Input: 

How to get burrs out of dog hair<br>Identify what a burr looks like. A bur is a seed that has a hook or teeth on it. These teeth or hooks are designed to latch onto a passing animal's fur, as a means of dispersing the seeds elsewhere.

Sentence: Dog like to mess around with burrs

Output: It's impossible to say


Input: 

What is certain, however, is that around 120,000 years ago, at least, the modern Homo sapiens first appeared and lived contemporaneously with the Neanderthal for at least 90,000 years, until the Neanderthal disappeared 30,000 years ago.

Sentence: Neanderthals only lasted for about 20,000 years total.

Output: No


Input: 

Venezuelan President Hugo Chavez has said he is prepared to receive detainees held by the US military at the Guantanamo Bay camp in Cuba. US President Barack Obama has ordered the closure of the controversial camp, in which around 240 inmates are held, by next year. Mr Chavez made his offer at a summit of South American and Arab countries.  It is highly unlikely the Pentagon will take him up on it, however, given the poor state of US ties with Venezuela.

Sentence: The US has tried to destabilize Venezuela in the past.

Output:
It's impossible to say