Input: 

Well, I understand, and Africa is important. And we've got to do a lot of work in Africa to promote democracy and trade, and there are some -- Vice President mentioned Nigeria is a fledgling democracy. We have to work with Nigeria. That's an important continent.

Sentence: Africa is a important continent.

Output: Yes


Input: 

How to know if you have spondylosis<br>Look for neck and back pain. Spondylosis often has no symptoms. However, if it does produce symptoms, pain along the neck and spine is one of the most common.

Sentence: neck and back pain has been experienced by bush

Output: It's impossible to say


Input: 

Ophelia Knits A Sweater<br>Ophelia had always wanted to learn to knit. She decided to try knitting a sweater. She worked very hard, knitting every day on the train to work. Finally her sweater was complete. Ophelia was glad that she had learned to knit.

Sentence: Ophelia wants to knit a blanket next.

Output: It's impossible to say


Input: 

Grandfather Frog scratched his head thoughtfully and looked a long time at the dam of logs and sticks and mud .<br>Then his big mouth widened in a big smile .<br>`` Why , that is very simple , '' said he , `` Jerry Muskrat will make a big hole through the dam near the bottom , because he knows how , and the rest of us will keep watch to see that no harm comes near . ''

Sentence: Grandfather Frog scratched his finger thoughtfully.

Output: