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: Britain has evacuated its last special forces from Yemen because of the deteriorating security situation there. The move was confirmed by a source familiar with the matter who spoke to Reuters today and follows an announcement by US officials on Saturday that the country had evacuated its own remaining personnel, including about 100 special operations forces. US State Department spokesman Jeff Rathke said in a statement: 'Due to the deteriorating security situation in Yemen, the US government has temporarily relocated its remaining personnel out of the country.' Anti-Houthi protesters demonstrate in Yemen's southwestern city of Taiz today. Iran-backed Houthis took over the city on Sunday as violence intensifies with the group's continuing push southTroops airlifted from capital Sana'a amid deteriorating security situationUS evacuated its own remaining personnel on Saturday, official confirmedPolice troopers used tear gas to disperse anti-Houthi protesters in TaizSouthwestern city was taken over by Iran-backed Houthi rebels on SundayNorthern group continues to move south after taking capital in SeptemberCountry on brink of civil war which may involve neighbouring Saudi ArabiaISIS affiliates claimed responsibility for deadly bombs at Sana'a mosques 
 Question:Britain withdrew staff from its embassy in _ last month.
Solution:
Yemen