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. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
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.
Solution is here: China
Explanation: This is a good example. Based on the passage, any cubs will return to China at the age of two

Now, solve this: (CNN) -- A former security guard told CNN on Monday that he was unjustly fired after he took pictures of President Barack Obama's motorcade during a visit to Atlanta in September. Kenneth Tate worked for a private security firm when President Obama visited the Centers for Disease Control and Prevention on September 16. He told CNN's Brooke Baldwin in an exclusive television interview that he stuck to his assigned duties and tried to take photos after he was done escorting President Obama. Members of Congress were upset when the media reported last month that Tate had a .40-caliber handgun while in an elevator with the President. That report, coupled with news of an incident in which a man jumped a fence and made it into the White House, led to the resignation of Secret Service Director Julia Pierson.Fired security guard tells CNN he stuck to his assigned dutiesKenneth Tate only went to take pictures when the detail was over, he saysFederal official says CDC asked for Tate to be reassignedTate says he carried a handgun that he was given, never took photos of President on elevator 
 Question:Tate said he was supposed to take the President to two different floors of one of the _ buildings.
Solution:
Centers for Disease Control and Prevention