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: The voters of the Rust Belt have shaken up the 2016 presidential campaign: Hoping to jolt a political system they see as ineffective and out of touch, they have repeatedly revolted by supporting unlikely, anti-establishment candidates. In both Donald Trump and Bernie Sanders, these voters see a potential for change they haven't felt in generations. They say they are willing to shed party allegiances and reimagine their priorities this year, even voting for a self-described democratic socialist, or for a flame-throwing real estate developer who has never served in government. In doing so, they have become the engine of one of the most extraordinary elections in modern U.S. history.CNN spent a week visiting three Rust Belt citiesVoters are fed up with the status quo and hungry for change 
 Questions:"I know a lot of people think _'s crazy," he says, "but he's different." (A) Rust Belt (B) Donald Trump (C) Bernie Sanders (D) U.S. (E) CNN
Example Output: (B)

Example Input: (Ars Technica) -- These days, it seems, it's not enough for a digital device to just play games. To keep up with the smartphones and tablet computers of the world, any game system needs to at least nod in the direction of cloud-based and social networking "apps" that are all the rage with the kiddies. Sony's PlayStation Vita has now done exactly that, launching free downloadable Netflix, Twitter and Flickr apps in conjunction with the system's official debut Wednesday (though pre-orderers have had the system for a week now). Your very first encounter with two of these apps foreshadows the occasionally awkward experience to come. When you first load up Twitter or Flickr on your Vita, you're asked to click a button that opens up a web browser where you can log in to the service.The PS Vita is primarily a gaming device but also runs apps for Netflix, Twitter and other servicesThe Vita screen's resolution isn't quite "HD," but high-definition content still looks goodYou can easily search through tweets with a handy conversation viewFlickr has a nice interface with quick access to photostream, favorites and contacts 
 Questions:This is the only _ app so far that makes use of the system's face buttons as well as the touch screen, letting you fast forward and rewind with the analog stick or pause with the X button. (A) Ars Technica (B) Sony (C) PlayStation Vita (D) Netflix (E) Twitter (F) Flickr
Example Output: (C)

Example Input: (CNN) An ISIS massacre on the streets of Moscow? Bombs detonated by the same terror group in St. Petersburg? Such "huge terrorist acts" might have happened if Russian authorities hadn't detained seven alleged ISIS members, state media reported. The FSB -- Russia's security agency and the successor to the Soviet Union's KGB -- told state-run TASS news that the seven suspects were charged Wednesday for plotting terrorist attacks. They'd been detained February 7 in Yekaterinburg, Russia's fourth-largest city situated in the Sverdlovsk region in the Urals, according to a report by state-run Sputnik news citing the FSB. To date, Russia hasn't been hit by ISIS terror attacks on busy, civilian-filled areas like those in Paris, Tunis or Jakarta. But it has been a target, in part for the Kremlin's armed efforts against the Islamist extremist group in Syria.Agency: The suspects were from Russia, central Asian nations and led by someone who'd come from TurkeySearches of the suspects' houses turned up a bomb lab, guns, grenades and "extremist literature," state news saysISIS has threatened attacks in Russia, which is involved in a military campaign against the terror group in Syria 
 Questions:While ISIS itself is relatively new, the threat from Islamist extremists in _ is not. (A) ISIS (B) Moscow (C) St. Petersburg (D) Russian (E) FSB (F) Soviet Union (G) KGB (H) TASS (I) Yekaterinburg (J) Sverdlovsk (K) Urals (L) Sputnik (M) Paris (N) Tunis (O) Jakarta (P) Kremlin (Q) Islamist (R) Syria (S) Asian (T) Turkey
Example Output:
(D)