Input: 

A fight between inmates at the Regina Correctional Centre sent one person to hospital on Aug, 19. The inmate was taken to hospital with unknown injuries after the fight, but was later returned to the correctional centre. The facility was placed on lockdown after the fight to ensure the safety of all staff and inmates. The incident will be reviewed and the matter has been referred to the RCMP to determine if an investigation will be conducted.

Sentence: Only two inmates were involved in the fight

Output: It's impossible to say


Input: 

He met U.S. President, George W. Bush, in Washington and British Prime Minister, Tony Blair, in London.

Sentence: They met for movie and a dinner.

Output: It's impossible to say


Input: 

The owners of Phinda, the South African-based Conservation Corporation, could not have paid for a better advertisement for their philosophy of wildlife conservation: a people-based approach to conservation, which is slowly gaining ground in Africa as game reserves come under ever greater threat from hungry, poor and angry local populations.

Sentence: The local population is hungry.

Output: Yes


Input: 

Mama the Frog<br>Big Mama the frog lived with me for a few months. We put her in a large aquarium in the living room. We filled it up with rocks and sticks, and a little water. We bought flies for her from the bait shop. One day my brother decided to dissect her instead of keeping her.

Sentence: Big Mama the frog lived with me for a few days

Output:
No