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.

Input: Consider Input: NEW YORK (CNN) -- John McCain has learned his lesson: Don't ever cancel on David Letterman. Appearing on CBS' "Late Show with David Letterman" Thursday, the Republican presidential candidate apologized for skipping out on a scheduled visit in September that Letterman later made the subject of an ongoing joke. "I screwed up," McCain told Letterman more than once in the interview that aired Thursday night. McCain's appearance on the show comes three weeks after he raised the ire of the generally mild-mannered host by canceling at the last minute, citing his decision to suspend his presidential campaign because of the financial crisis."I screwed up," John McCain tells David Letterman for canceling scheduled visitLetterman used McCain's no-show as subject of ongoing jokeMcCain also discussed Sarah Palin, Obama's ties to 1960s' radical William Ayers 
 Questions:When Letterman asked McCain about Palin's charge that _ "palled around with terrorists," the senator said "he did." (A) NEW YORK (B) CNN (C) John McCain (D) David Letterman (E) CBS (F) Late Show (G) Republican (H) Letterman (I) McCain (J) Sarah Palin (K) Obama (L) William Ayers

Output: (K)


Input: Consider Input: West Des Moines, Iowa (CNN) Donald Trump had every reason to feel optimistic Monday. His poll numbers were up; he had secured two prominent endorsements in the space of a week; and even the weather seemed to be cooperating, with a snowstorm coming in from the west expected to hold off until after midnight. Sarah Palin endorses Donald Trump And then, he lost, coming in second to Ted Cruz. Trump spent January in full-on attack mode against Cruz. Trump questioned whether Cruz qualifies as a "natural-born citizen" eligible to serve as president. He went after the evangelical vote, winning the endorsement of Liberty University President Jerry Falwell, Jr., but didn't back up the appeals with a ground game. And then he sat out the final debate, opting for a rally across town at the same time.Donald Trump finished second in the Iowa caucuses on Monday nightHe sat out the final debate in Iowa and he acknowledged Tuesday that his plan might have backfired 
 Questions:With _'s win and Marco Rubio's much stronger-than-expected finish Monday night, Trump now urgently confronts the danger of the Florida senator chipping away at his establishment backing in upcoming contests. (A) West Des Moines (B) Iowa (C) CNN (D) Donald Trump (E) Sarah Palin (F) Ted Cruz (G) Trump (H) Liberty University (I) Jerry Falwell (J) Jr.

Output: (F)


Input: Consider Input: Washington (CNN) The young blood in the Democratic Party is (still) waiting for its moment. Democratic leaders across both the legislative and executive branches are generally older than leadership on the other side of the aisle, leading to some restlessness among the lower ranks who have been patiently awaiting their turn at the top. The most recent blow to those hoping to climb the ranks? Dianne Feinstein, 84, the oldest senator currently serving in the chamber, just announced a bid for re-election to the seat she's held for two and a half decades. The presidential field also looks like an uphill climb for young Democrats: apart from a couple of standout young senators, names like Bernie Sanders and Joe Biden still loom large among the potential hopefuls.The average age of a Democratic member of Congress has topped 61 years oldNancy Pelosi, who has held her post since 2003, is 77 years oldA CNN poll found that the top Democrats who voters say they think represent their values averages 66 years old 
 Questions:Having a generally older slate of leaders could separate _ from one of their core constituencies. (A) Washington (B) CNN (C) Democratic Party (D) Democratic (E) Dianne Feinstein (F) Bernie Sanders (G) Joe Biden (H) Congress (I) Nancy Pelosi


Output: (D)