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.

Let me give you an 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. (A) Tian Tian (B) UK (C) Edinburgh Zoo (D) Sweetie (E) Yang Guang (F) China
The answer to this example can be: (F)
Here is why: This is a good example. Based on the passage, any cubs will return to China at the age of two

OK. solve this:
(CNN) He may be the ultimate insider, but Hassan Rouhani is running like the anti-establishment candidate. At a campaign rally last week at the Azadi stadium in Tehran, Rouhani took to the stage and delivered a speech more worthy of an outsider than the incumbent President of Iran. Standing behind a lectern and surveying the sea of purple -- his campaign color -- before him, Rouhani promised much. "We want freedom of the press," he declared, "freedom of association, and freedom of thought!" As he spoke, more than 10,000 supporters -- many of them women, many of them middle class -- chanted slogans demanding the release from house arrest of leading opposition figures.Iranian President Hassan Rouhani faces tight reelection battle against hardline cleric Ebrahim RaisiIran's presidential campaign is being seen as a referendum on the nuclear deal 
 Questions:Iran's regional policies, its alleged support for terrorism and its missile program will constrict _'s ability to get the remaining sanctions lifted. (A) CNN (B) Hassan Rouhani (C) Azadi (D) Tehran (E) Iran (F) Iranian (G) Ebrahim Raisi
Answer:
(B)