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.

[EX Q]: (CNN) Though many individuals likely contributed to the President's decision to fire FBI Director James Comey, one notable one may have been Roger Stone, a 64-year-old close friend of Donald Trump and central figure in the FBI investigation into Trump campaign ties to Russia. In the middle of the Watergate scandal, Stone, who engaged in dirty tricks during Richard Nixon's 1972 campaign, was discovered to have hired a Republican operative to infiltrate the George McGovern campaign and was subsequently fired from his job. After the President's resignation, Stone remained an ardent Nixon apologist and loyalist. He even had the man's face tattooed on his back and devoted his life to ruthless, anything-goes politics (or political consulting, as you may know it). Stone's motto was and continues to be: "Admit nothing, deny everything, launch counterattack." And anyone who has watched Trump closely over the years would think it was his personal slogan, too.Michael D'Antonio: Roger Stone has undoubtedly influenced President Trump's decision to fire James ComeyAs an old friend and political adviser, Stone has taught Trump be ruthless -- particularly when protecting himself from attackTherefore Comey, who was leading the investigation into Trump campaign ties to Russia, had to be taken out, writes D'Antonio 
 Questions:Stone was introduced to _ in the 1980s by the notorious Roy Cohn. (A) CNN (B) FBI (C) James Comey (D) Roger Stone (E) Donald Trump (F) Russia (G) Watergate (H) Stone (I) Richard Nixon (J) Republican (K) George McGovern (L) Nixon (M) Michael D'Antonio (N) Comey (O) D'Antonio
[EX A]: (E)

[EX Q]: (CNN)The American and British embassies in Yemen suspended operations and moved staffers out Wednesday, and urged their citizens to leave the politically-unstable nation as well. The U.S. Embassy had already been operating on a skeletal staff since late January. The French embassy also said it would close its doors starting Friday due to the security situation. The troubled Middle Eastern nation has been without clear leadership and potentially on the brink of armed conflict since Houthi rebels seized control of key government facilities, dissolved parliament, and placed the President under house arrest. President Abdu Rabu Mansour Hadi later resigned in protest.The troubled Middle Eastern nation has been without clear leadershipThe U.S. is worried about possible terrorist attacks on Americans 
 Questions:The security situation continues to deteriorate, it said, and "we now judge that our _ staff and premises are at increased risk." (A) CNN (B) American (C) British (D) Yemen (E) U.S. (F) Embassy (G) French (H) Middle Eastern (I) Houthi (J) Abdu Rabu Mansour Hadi (K) Americans
[EX A]: (F)

[EX Q]: An upcoming documentary describes Yelp as the internet's equivalent to the mafia, and the publicly-traded company is doing everything in its power to discredit the film before it is released. Yelp, founded in 2004 by two former PayPal employees, is a website that lets users write their own reviews of businesses like restaurants and doctor's offices. However, like many web businesses, Yelp's revenue comes mainly from advertising and the businesses that buy ads are often also rated and reviewed on the site. Kaylie Milliken is the filmmaker behind Billion Dollar Bully, an ongoing documentary focused on Yelp's impact on small businesses.Billion Dollar Bully, an upcoming documentary, focuses on the review site's impact on small businessesFilmmaker Kaylie Milliken spoke to several business owners who believe their Yelp ratings went down after they declined to advertise on the siteThe company has denied the allegations, citing court rulings, an FTC investigation and a Harvard study as validation of their business practices 
 Questions:In a statement, the company spokesman explained why they decided to pass on speaking to _. (A) Yelp (B) PayPal (C) Kaylie Milliken (D) Billion Dollar Bully (E) FTC (F) Harvard
[EX A]:
(C)