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 Input:
What kind of weapon can shoot down a fully loaded passenger jet flying at nearly 33,000 feet? That could be a key question in the Malaysia Airlines Flight 17 crash investigation, as officials try to determine what was responsible for Thursday's plane crash in volatile eastern Ukraine. A radar system saw a surface-to-air missile system turn on and track an aircraft right before the plane went down, a senior U.S. official told CNN's Barbara Starr. And a second system saw a heat signature at the time the airliner was hit. The United States is analyzing the trajectory of the missile to pinpoint where the attack came from, the official said.Senior U.S. official: Radar saw surface-to-air missile system track aircraftA sophisticated surface-to-air missile was more likely used, experts sayOne possibility is the Russian-made Buk missile system, retired Army officer saysThe sophisticated weapon would require professional soldiers, expert says 
 Questions:Such weapons travel with _ troops at the division level, Francona said. (A) Malaysia Airlines (B) Ukraine (C) U.S. (D) CNN (E) Barbara Starr (F) United States (G) Russian (H) Buk missile system (I) Army

Ex Output:
(G)


Ex Input:
Andy Murray has faced a tricky transition in recent weeks between hard and clay courts as he tries to balance his preparations for the ATP World Tour Finals at The O2 and the Davis Cup final in Belgium. After four days of training on clay at London’s Queen’s Club this past week, Murray is now back on hard courts as he gets set to open his World Tour Finals campaign against Spaniard David Ferrer on Monday afternoon. Sportsmail was granted the first hit on the freshly-laid court at The O2 as Sky Sports pundit and Murray’s ex-coach Mark Petchey explained the issues involved in changing surfaces which his former charge will have to deal with over the next fortnight.Andy Murray is competing in this week's ATP World Tour FinalsThe world No 2 is also gearing up for the Davis Cup final in BelgiumMurray has flitted back and forth between hard and clay courts recentlyMark Petchey explains the difficulties involved in switching surfacesSee more of the latest news and updates on Andy Murray 
 Questions:That again is something he is going to have to contend with during the _. (A) Andy Murray (B) ATP World Tour Finals (C) The O2 (D) Davis Cup (E) Belgium (F) London (G) Murray (H) World Tour Finals (I) Spaniard (J) David Ferrer (K) Sportsmail (L) Sky Sports (M) Murray’s (N) Mark Petchey (O) No 2

Ex Output:
(B)


Ex Input:
Speaking to the nation after Congress reached a deal to reopen the government and temporarily raise the debt ceiling, President Barack Obama said we are "Americans first" and need to put partisan interests aside to get things done. But can we? The recent shenanigans do not bode well for the future. The resolution of the shutdown always hinged on whether House Speaker John Boehner, a Republican, would defy the tea party hard-liners in his party and allow a vote on a bill that a majority of Republicans did not support. What have we learned about Boehner's leadership, or lack thereof?Maria Cardona: Shutdown resolution hinged on whether Boehner would defy tea partyShe says Boehner's job appears safe, but some question his leadershipShe says he seems to ignore interests of Americans in favor of tea party, a losing propositionCardona: Boehner must lead if he wants to save GOP House districts that appear vulnerable 
 Questions:For the first time ever, polls show 60% of voters are ready to boot all of _ out -- including their own representatives. (A) Congress (B) Barack Obama (C) Americans (D) John Boehner (E) Republican (F) tea party (G) Republicans (H) Boehner (I) Maria Cardona (J) Cardona (K) GOP House

Ex Output:

(A)