In this task, you will be presented with a context passage, a question about that paragraph, and a possible answer to that question. The task is to check the validity of the answer. Answer with "Yes" or "No".

Ex Input:
A flight from Los Angeles to Nashville is diverted to land in Las Vegas , Nevada when one of the passengers , Ralph Bundt becomes violent and attacks a stewardess . Ralph had been bitten by a hamster Which is really a lab rat , brought onto the plane by Henry for his school students . Ralph is restrained , but not before he bites the flight attendant Paula . The plane is forced to make an emergency landing in Las Vegas , and once it has landed , air traffic control refuses to let it approach the gate . Disobeying orders , Captain Forrest and his co-pilot Willsy find a jetway operated by a baggage handler Ed Ramirez . Almost everyone evacuates the plane , except for the elderly couple Bev Stevens and her paralyzed mute husband Doc Stevens , and the pilots , who try to keep the violent Ralph contained in an aircraft bathroom . However , they learn that they have been locked out of the airport . Soon , armed soldiers and what appear to be CDC scientists surround the terminal . One of the passengers , a military medic named Shilah Washington , reveals she has a medical kit in her bag in the plane's cargo hold . The lead flight attendant Jenny , Henry , Ed , Nial Britz , and Preston sneak back into the plane to retrieve it . They retrieve Shilah's kit and Nial's gun and they try to leave the hold . While in the plane , Jenny is attacked by an infected Captain Forrest and Nial shoots and kills him , but it seems that some of the captain's blood had gotten into Nial's eye . <sep>What causes Ralph to bite the flight attendant?<sep>Lab Rat

Ex Output:
Yes

Ex Input:
An atom is the very smallest particle that still the elements properties. All the atoms of an element are alike. They are also different from the atoms of all other elements. For example, atoms of gold are always the same. It does not matter if they are found in a gold nugget or a gold ring. All gold atoms have the same structure and properties. For example, all gold atoms contain 79 protons. One of golds unique properties is that it is a great conductor of electricity. Gold is a better conductor of electricity than copper. Gold is more rare and expensive than copper. Copper is used in house wiring. Gold is far too expensive. <sep>How is gold different from copper?<sep>Gold is a better conductor of electricity than copper and more rare and expensive than copper

Ex Output:
Yes

Ex Input:
(CNN) -- Cuba will pardon more than 2,900 prisoners, the government said Friday, though U.S. subcontractor Alan Gross is not among those who will be freed. The decision to release the prisoners follows "numerous requests" from their family members and religious institutions, and is a humanitarian gesture, said Cuban President Raul Castro. Among those who might be freed are prisoners over the age of 60, along with those who are sick, female or young with no previous criminal record. With some exceptions, prisoners convicted of spying, terrorism, murder and drug trafficking will not be released. Those who will be freed have already served a "important" part of their sentences and exhibited good behavior, according to an official statement published on the state-run website Cubadebate. The jailed American, Gross, will not be among those pardoned, the Cuban Interests Section in Washington said. Gross was jailed in December 2009, when he was working as a subcontractor on a U.S. Agency for International Development project aimed at spreading democracy. Castro has accused him of importing satellite equipment to connect dissidents to the Internet, and this year Cuba's highest court upheld the 15-year sentence imposed on Gross for committing crimes against the security of the state. He has maintained his innocence and said he was trying to help connect the Jewish community to the Internet. Castro, speaking to the National Assembly, said that 86 prisoners from 25 countries would be among those released in coming days. He cited the upcoming visit of Pope Benedict XVI as one of the motivations behind the move, which he said showed the "generosity and strength of the revolution." The pope has said he plans to visit Mexico and Cuba before Easter. <sep>Of the 2,900 prisoners, who will be released?<sep>Murderers

Ex Output:
No