In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Among the entities, try to find the best entity that is most likely to fill in "_" and classify the answers based on options.

Example Input: (CNN) Iranian President Hassan Rouhani was sworn in for a second term Saturday in front of more than 100 foreign dignitaries as he accused the United States of undermining the 2015 nuclear agreement between Iran and the major world powers. Rouhani was a key architect of the 2015 nuclear agreement with the United States, the European Union and other partners, known officially as the Joint Comprehensive Plan of Action. The deal led to the lifting of most international sanctions against Iran in return for curbs on its nuclear program. "The actions of the US regarding the implementation show that the US can't be trusted," Rouhani said. "The world should know that any abrogation pertaining to the agreement would face the unanimous reaction of the nation and the government of Iran.""The US can't be trusted," Iranian President Hassan Rouhani saysIran urges European Union not to side with Donald Trump 
 Questions:EU foreign policy chief Federica Mogherini was among the attendees at Saturday's ceremony in _. (A) Iranian (B) Hassan Rouhani (C) United States (D) Rouhani (E) European Union (F) Joint Comprehensive Plan of Action (G) US (H) Donald Trump
Example Output: (A)

Example Input: Washington (CNN) The Senate has silenced Elizabeth Warren. And by doing so, majority Republicans just handed the liberal firebrand a megaphone -- further elevating President Donald Trump's fiercest and most prominent critic in the Senate and turning her into a Democratic hero. The rebuke of Warren came after the Massachusetts Democrat read a letter written 30 years ago by Coretta Scott King, the widow of Martin Luther King Jr., opposing the nomination of Jeff Sessions for a federal judgeship. Warren cited the letter during a debate on the nomination of Sessions -- now an Alabama senator -- as Donald Trump's attorney general. Reading from King's letter to members of the Senate Judiciary Committee in 1986, Warren said: "Mr. Sessions has used the awesome power of his office to chill the free exercise of the vote by black citizens in the district he now seeks to serve as a federal judge."Warren was told she violated Senate rules against impugning another senatorShe was reading a letter by Coretta Scott King from 1986 opposing Jeff Sessions 
 Questions:Millions of people had also watched on Facebook as _ read the letter outside the Senate chamber. (A) Washington (B) CNN (C) Senate (D) Elizabeth Warren (E) Republicans (F) Donald Trump (G) Democratic (H) Massachusetts (I) Democrat (J) Coretta Scott King (K) Martin Luther King Jr. (L) Jeff Sessions (M) Sessions (N) Alabama (O) Senate Judiciary Committee
Example Output: (D)

Example Input: The victims of a horrific medical experiment run by the United States in Guatemala that deliberately infected individuals with syphilis in order to test drugs and study the disease are now suing Johns Hopkins University. The lawsuit, which has 750 plantiffs and includes victims and their families, is seeking $1billion, claiming that officials from Hopkins approved the study at the time and even helped to plan and monitor it as it ran from 1945 to 1956. The few victims who are still alive were almost all children when they were unknowingly infected, and many among them were orphans. In the aftermath of the experiment, some of the individuals died of syphilis, with open sores covering their bodies, while those who did survive claim they passed the disease down to their children, ending up with babies that were born blind, severely handicapped, and, in at least one case, without a brain.Victims and their families of a US study that infected individuals with syphilis in Guatemala without their knowledge are suing Johns HopkinsIn a $1billion lawsuit, 750 plaintiffs claim the college approved and helped to plan the study, which ran from 1945 to 1956The victims were mostly orphans, children, prisoners, soldiers, prostitutes and mental patientsMarta Orellana was just 9 years old when one day at the orphanage she was ordered to go to the infirmary and infected with the diseaseFederico Mesa was a solider who was forcibly injected with syphilis as a soldier and passed it along to his familyMarta Ruiz's husband was infected, and she gave birth to one child who did not have a brain and another who is severely handicappedAnother woman, Victoria, claims she was born blind because he father was infectedBlindness, deformities, and death are just some of the problems babies born with congenital syphilis faceA lawyer for Johns Hopkins has called the suit 'baseless' 
 Questions:A federal judge dismissed a lawsuit against the _ government by many of the same plaintiffs in the current Hopkins lawsuit back in 2012. (A) United States (B) Guatemala (C) Johns Hopkins University (D) Hopkins (E) Johns Hopkins (F) Marta Orellana (G) Federico Mesa (H) Marta Ruiz (I) Victoria
Example Output:
(A)