You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

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
Solution: (F)
Why? This is a good example. Based on the passage, any cubs will return to China at the age of two

New input: Washington (CNN) As the sun rose in northern Germany Tuesday, authorities swooped in and carried out a dramatic raid that captured three Syrian men believed to be members of an ISIS sleeper cell with ties to Paris terror attacks network. The men, who range in age from 17 to 26, came into Europe along the same migrant route refugees are using to escape the brutal Syrian civil war. These latest arrests have highlighted tensions in Europe over ISIS' ability to exploit these routes to infiltrate Western cities. The latest arrests come after other similar cases were revealed in a recent CNN investigation.Europe has taken steps to improve vetting, but the continent is facing a major security challengeThe US is better able to control the flow of refugees entering the country 
 Questions:ISIS has used migrant routes to move operatives into _. (A) Washington (B) CNN (C) Germany (D) Syrian (E) ISIS (F) Paris (G) Europe (H) Western (I) US
Solution:
(G)