Given the task definition, example input & output, solve the new input case.
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: For four years we have waited expectantly for the pitter patter of tiny paws. Soon, that wait could finally be over. Tian Tian, the UK's only female giant panda, has conceived and could give birth to a cub as early as August. However Edinburgh Zoo, where the pandas live, have warned people 'not to get too excited' as the process is 'extremely complex'. Moreover, on the two previous occasions keepers inseminated Tian Tian - whose name means 'Sweetie' - she has failed to produce a panda cub. She was artificially inseminated again in March this year, but keepers at the zoo say implantation - when a fertilised egg attaches to the uterus - has not yet occurred.Tian Tian has conceived and could give birth to a cub as early as AugustShe has been inseminated twice before but so far failed to produce a cubTian Tian and Yang Guang arrived in 2011 from China to great fanfareOn loan at £600k a year, became first giant pandas to live in UK for 17 years 
 Questions:Under the terms of the agreement any cubs will return to _ at the age of two, the age at which they would normally leave their mother in the wild. (A) Tian Tian (B) UK (C) Edinburgh Zoo (D) Sweetie (E) Yang Guang (F) China
Output: (F)
This is a good example. Based on the passage, any cubs will return to China at the age of two

New input case for you: (CNN) Last week, the American-backed Syrian Democratic Forces announced that it had taken Raqqa, the Syrian city, which had served as ISIS' capital. The taking of the city is the latest in a series of substantial military blows to ISIS' fortunes. However, Americans should not expect the fall of Raqqa to have a substantial effect on the jihadist threat at home. The threat posed by ISIS to the United States has long come primarily from its ability to inspire and enable attacks -- and not from its territorial holdings in Syria and Iraq. Since ISIS burst onto the global scene in 2014, seven individuals motivated by jihadist ideology have killed 74 people inside the United States in six attacks, according to New America's research. Though they may have been inspired by ISIS, none of those attacks were carried out under direct command by the group, and none of the deadly attacks involved a fighter who had returned from Syria or Iraq.David Sterman: Although the fall of Raqqa is a military blow to ISIS, the group and its ideology still remain a threat to the USISIS is quite effective at inspiring and enabling attacks thousands of miles from its base 
 Questions:Although there have been non-lethal attacks and foiled plots in which the plotters communicated with _ militants abroad. (A) CNN (B) American (C) Syrian Democratic Forces (D) Raqqa (E) Syrian (F) ISIS (G) Americans (H) United States (I) Syria (J) Iraq (K) New America (L) David Sterman (M) US
Output:
(F)