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].

Example input: 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.
Example output: China
Example explanation: This is a good example. Based on the passage, any cubs will return to China at the age of two
Q: Washington (CNN) -- How things change. In 2008, after a bruising primary battle with Hillary Clinton, then-Sen. Barack Obama was on the outs with former President Bill Clinton. This election cycle, Clinton is one of Obama's most visible surrogates. Obama and Clinton were to appear together Monday night at three New York City fundraisers, which are expected to bring in millions of dollars. In April, the two appeared side by side at the home of longtime Clinton supporter and former Democratic National Committee Chairman Terry McAuliffe, raising $2.1 million for the Obama campaign and the DNC. Clinton and Obama hit up the Big AppleThe Obama campaign is relying heavily on Bill Clinton's connections"Clinton just wants to help," a source close to the former president saidObama hopes Clinton can woo white, working-class men in key Southern and Rust Belt statesThere's been missteps: Clinton recently said Romney had a "sterling business career" 
 Question:"I have a general rule, which is that whatever he asked me about my advice, and whatever I say, should become public only if he decides to make it public," _ told reporters then.
A:
Bill Clinton