Input:

In 1999, Victor Conte was sent two vials of a new drug by a chemist he knew and he started giving it to some of his clients. Including says Conte, one of Americas most iconic sportswomen, Marion Jones, who was about to compete in the 2000 Sydney Olympics.

Sentence: Victor Conte had no athletes as clients

Output: No

Input:

The gastric bypass operation, also known as stomach stapling, has become the most common surgical procedure for treating obesity.

Sentence: Stomach stapling is a common surgical procedure for treating obesity.

Output: Yes

Input:

Video games<br>Andrew knew his son loved video games. So for his son's birthday he bought him video games. It was delivered to his house. So Andrew wrapped it. Then gave it to his son.

Sentence: Andrew bought his son a present

Output: Yes

Input:

Charlotte had always been very careful not to let the Pretty Lady see her , but today , after the Pretty Lady had gone past , Charlotte leaned out of the gap to watch her as far as she could .<br>And just at that very moment the Pretty Lady looked back ; and there , peering at her from the asylum fence , was a little scrap of a girl , with mouse-coloured hair and big freckles , and the sweetest , brightest , most winsome little face the Pretty Lady had ever seen .

Sentence: Charlotte was only 8 years old.

Output:
It's impossible to say