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.
--------
Question: (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

Answer: (D)


Question: London (CNN) -- To an outsider, Thursday's contest to elect the next mayor of London would appear to be a fight between two larger-than-life characters -- known best by their first names -- for control of the city's famous red buses. Among a wide field of candidates, only these two men have any realistic chance of taking a starring role at this summer's Olympic Games in London: Conservative Party incumbent Mayor Boris Johnson, 47, and his 66-year-old nemesis, Labour left-winger and former Mayor Ken Livingstone. Both men have devoted their energies to transport -- and attacking each other viciously on the issue, as well as on their complex personal tax arrangements.About 6 million Londoners are voting to elect new mayorRole largely ceremonial but mayor controls $23 billion budgetFront-runners are incumbent Conservative Boris Johnson and Labour's Ken LivingstoneTransport is key issue, especially design of city's famous red buses 
 Questions:True to the bitter rivalry between the men, Livingstone has pledged to cancel orders for more Routemasters in favor of hybrid vehicles if _ vote him back into power, although he will allow the current eight buses to remain in service. (A) London (B) CNN (C) Olympic Games (D) Conservative Party (E) Boris Johnson (F) Labour (G) Ken Livingstone (H) Londoners

Answer: (H)


Question: (CNN) After a strong statement of protest by Japanese Prime Minister Shinzo Abe, President Barack Obama Wednesday expressed "his sincerest condolences and deepest regrets" for the murder of a Japanese woman allegedly at the hands of a former U.S. Marine. Obama arrived in Japan Wednesday for a meeting of the G-7. "The U.S. will continue to cooperate fully" and will continue to ensure "justice is done under the Japanese legal system," Obama said. Kenneth Franklin Shinzato, a civilian worker at the U.S. Kadena Air Base in Okinawa Prefecture, was arrested on suspicion of abandoning the body of the 20-year-old woman.Obama arrived in Japan WednesdayHe will visit the Hiroshima memorial on Friday 
 Questions:Abe said that he felt "profound resentment for this self-centered and despicable crime this case has shocked not just Okinawa but all of _." (A) Japanese (B) Shinzo Abe (C) Barack Obama (D) U.S. (E) Marine (F) Obama (G) G-7 (H) Kenneth Franklin Shinzato (I) Kadena Air Base (J) Okinawa Prefecture (K) Hiroshima

Answer:
(A)