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

Now, solve this: Washington (CNN) Diplomatic relations between the U.S. and Russia began to unravel after Moscow said Saturday it had expelled two American diplomats and the U.S. revealed it had tossed two Russians in response to an attack on one of its personnel. "On June 17, we expelled two Russian officials from the United States to respond to this attack," State Department spokesman John Kirby told CNN, referring to an American diplomat who the spokesman said "was attacked by a Russian policeman" while trying to enter the U.S. embassy last month in Moscow. Russia revealed Saturday it had responded in kind. According to Russian State News Agency Sputnik, Deputy Foreign Minister Sergei Ryabkov said two Americans were declared persona non grata after an "unfriendly move" by the U.S. that was not specified.A Russian officials said two Americans were expelled after an "unfriendly move" by the U.S. that was not specifiedThe diplomatic incident comes after several recent military close calls between Russia and the United States 
 Questions:The _ embassy in the U.S. did not have any immediate comment Saturday. (A) Washington (B) CNN (C) U.S. (D) Russia (E) Moscow (F) American (G) United States (H) State Department (I) John Kirby (J) State News Agency (K) Sputnik (L) Sergei Ryabkov (M) Americans
Solution:
(D)