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) -- Marlene Monteolivo was a Democrat for many years, then a Republican. Now she's registered as a nonpartisan voter in Nevada who wants to support a candidate who will make the economy better. The Colombia native, who works for a Las Vegas social services agency, says she's leaning toward GOP challenger Mitt Romney. She likes his business sensibilities. But there's a hiccup. And it's a big one called immigration. It's the 200-pound anchor on the Republican message, say experts in Nevada politics. Many Latino voters will tell you "It's immigration, stupid," in the vein of the famously coined phrase on the economy during Bill Clinton's 1992 campaign.Some Latinos in hard-hit Nevada are considering voting for Mitt RomneyBut for many, immigration is a deciding issueOne GOP activist says his party has not done enough to connect with LatinosHe says President Barack Obama's appearance with Mexican band Mana was great strategy 
 Questions:"With the economy as bad as it is, you would think lot of people would blame _ and say, 'Let me give Mitt Romney a shot,' " Maffatt says. (A) CNN (B) Marlene Monteolivo (C) Democrat (D) Republican (E) Nevada (F) Colombia (G) Las Vegas (H) GOP (I) Mitt Romney (J) Latino (K) Bill Clinton (L) Latinos (M) Barack Obama (N) Mexican (O) Mana
Solution:
(M)