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.

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. (A) Tian Tian (B) UK (C) Edinburgh Zoo (D) Sweetie (E) Yang Guang (F) China
Example output: (F)
Example explanation: This is a good example. Based on the passage, any cubs will return to China at the age of two
Q: (CNN) After voting Thursday to leave the European Union, citizens of the United Kingdom now face the consequences, including the potential impact on their health care services. The UK's National Health Service famously provides medical checkups and most treatments free of charge to all residents. In the runup to the Brexit vote, the chief executive of the National Health Service England declined to publicly support either side of the leave-or-stay debate, but implied that remaining with the EU was the better decision. Simon Stevens' viewpoint was firmly rooted in financial realities. "We've got a clear plan to improve cancer services, saving 30,000 lives over the next five years. We need to upgrade our mental health services. We need to strengthen primary care, and in order to put the fuel in the tank we need the proceeds of economic growth," Stevens said. "Anything that puts [more investment] at risk is a deep concern."NHS leadership predicted that the Brexit will hurt health care fundingOne in every 20 people within the NHS work force is an EU national 
 Questions:Forty-five chief executives and chairmen from the UK's hospital, ambulance, mental health and community trusts reported their thoughts on the impact of a potential _. (A) CNN (B) European Union (C) United Kingdom (D) UK (E) National Health Service (F) Brexit (G) National Health Service England (H) EU (I) Simon Stevens (J) Stevens (K) NHS
A:
(F)