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>Psyco

Ex Output:
No

Ex Input:
New York (CNN) -- Three defendants pleaded guilty in federal court Wednesday to conspiring to defraud a Holocaust reparations organization out of $57.3 million, according to court documents. Genrikh Kolontyrskiy, Moysey Kucher and Dora Kucher, all of Brooklyn, helped produce and process some of the thousands of fraudulent applications for the Conference on Jewish Material Claims Against Germany that are under investigation. The organization, also known as the Claims Conference, distributes more than $400 million a year from funds provided by the German government to victims of the Holocaust. "Our efforts to hold to account all of the individuals who participated in defrauding an organization that exists solely for the purpose of aiding victims of Nazi atrocities continues," said Preet Bharara, U.S. Attorney for the Southern District of New York, in a statement. The defendants aided in defrauding two funds managed by the Claims Conference, the Article 2 Fund and the Hardship Fund, of $45 million and $12.3 million, respectively, according to court documents. The Article 2 Fund makes monthly payments of around $400 to survivors of Nazi persecution who make less than $16,000 per year "and either lived in hiding or under a false identity for at least 18 months," according to a news release from the U.S. Attorney's office. The Hardship Fund pays a one-time payment of $3,500 to "victims of Nazi persecution who evacuated the cities in which they lived and were forced to become refugees." Kolontyrskiy, 80, knowingly processed fraudulent applications for payment while employed with the Article 2 Fund, according to court documents. Moysey Kucher, 66, and Dora Kucher, 58, recruited individuals to provide identification documents that were used to prepare fraudulent applications for both funds, in exchange for money paid out to the false applicants, according to court documents. Jesse Siegel, Kolontyrskiy's attorney, said his client was by no means a major instigator, but he takes responsibility for his actions. <sep>When Genrikh Kolontyrskiy, Moysey Kucher and Dora Kucher submitted applications fraudulently, what two organizations did their money come from?<sep>Claims Conference and the Holocaust reparations organization

Ex Output:
No

Ex Input:
Before crossing to Asia, Alexander wanted to safeguard his northern borders. In the spring of 335 BC, he advanced to suppress several revolts. Starting from Amphipolis, he traveled east into the country of the "Independent Thracians"; and at Mount Haemus, the Macedonian army attacked and defeated the Thracian forces manning the heights. The Macedonians marched into the country of the Triballi, and defeated their army near the Lyginus river (a tributary of the Danube). Alexander then marched for three days to the Danube, encountering the Getae tribe on the opposite shore. Crossing the river at night, he surprised them and forced their army to retreat after the first cavalry skirmish. News then reached Alexander that Cleitus, King of Illyria, and King Glaukias of the Taulanti were in open revolt against his authority. Marching west into Illyria, Alexander defeated each in turn, forcing the two rulers to flee with their troops. With these victories, he secured his northern frontier. While Alexander campaigned north, the Thebans and Athenians rebelled once again. Alexander immediately headed south. While the other cities again hesitated, Thebes decided to fight. The Theban resistance was ineffective, and Alexander razed the city and divided its territory between the other Boeotian cities. The end of Thebes cowed Athens, leaving all of Greece temporarily at peace. Alexander then set out on his Asian campaign, leaving Antipater as regent. <sep>What two groups did Alexander defeat in order to secure the northern frontier?<sep>Thracian

Ex Output:
Yes