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) President Donald Trump signed off on press secretary Sean Spicer's decision to check aides' cell phones to make certain they weren't communicating with reporters by text message or through encrypted apps, multiple sources confirmed to CNN on Monday. The decision sent a signal across the administration that Trump is furious at leaks from inside the White House. The sources also said the President gave his blessing before Spicer blocked reporters from the briefing last Friday. When reached by CNN, Spicer denied that Trump was involved in either decision. "(Trump) did not sign off or even know what I did. That is not accurate," he said, later adding, "I don't believe he even knew there was a gaggle and in no way was it discussed with him or any other staffer."Spicer recently did a check of White House staffers' phonesSpicer denies that Trump signed off 
 Questions:One person close to the situation described _ as the "enforcer." (A) Washington (B) CNN (C) Donald Trump (D) Sean Spicer (E) Trump (F) White House
Solution:
(D)