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) -- President Obama toasted a growing U.S. friendship with India at the first state dinner of his administration Tuesday, an evening of regal pageantry and symbolic politics in a tent on the White House South Lawn. "To the future that beckons all of us," Obama said with glass raised toward his guest of honor, visiting Indian Prime Minister Manmohan Singh. "Let us answer its call. And let our two great nations realize all the triumphs and achievements that await us." A tradition dating back to 1874, state dinners are the most treasured and formal honor a U.S. president can offer a foreign dignitary, and the most coveted invitation in Washington.NEW: Obama toasts India prime minister, urges greater cooperation between two countriesTuesday's event is the first state dinner of Obama administrationState dinners are deemed one of the most treasured and formal honorsMenu includes greens from White House garden, honey from White House bees 
 Question:Each course was paired with a different wine, all of _ vintage.
A:
U.S.