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: (CNN) CNN announced Wednesday it will host one of its town hall events with the Green Party's presidential nominee Jill Stein and her running mate, Ajamu Baraka. The hour-long event will be held on Wednesday, August 17 at 9:00 p.m. ET. The event will broadcast live on CNN, CNN International, CNN en Espanol and online via CNNgo. Stein has consistently polled as the fourth-most popular option in the presidential race, after Hillary Clinton, Donald Trump and Libertarian Gary Johnson. In the most recent CNN/ORC poll, Stein received 5% support nationwide, four points behind Johnson, her nearest competitor. Jill Stein: The Democratic Party 'fakes left,' marches rightStein has consistently polled as the fourth-most popular optionShe has focused on pitching herself to Sanders' supporters 
 Questions:While Sanders endorsed _ and has pledged to ensure she becomes the next president, Stein has spent much of her efforts appealing to Sanders' most diehard supporters. (A) CNN (B) Green Party (C) Jill Stein (D) Ajamu Baraka (E) CNN International (F) CNN en Espanol (G) CNNgo (H) Stein (I) Hillary Clinton (J) Donald Trump (K) Libertarian (L) Gary Johnson (M) ORC (N) Johnson (O) Democratic Party (P) Sanders
Solution:
(I)