Detailed Instructions: 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.
See one example below:
Problem: 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)
Explanation: This is a good example. Based on the passage, any cubs will return to China at the age of two

Problem: (CNN) -- Nearly one out of every five NATO soldiers killed in Afghanistan this year were killed by Afghan police or army forces. Nine of the 16 victims were U.S. soldiers. This pattern of attacks raises a fundamental problem for the plans of the United States and other NATO countries to draw down their forces over the next two years. That plan is, in part, predicated on the idea that as Afghan forces take the lead in security operations, they will be supported by small numbers of U.S./NATO advisers embedded in Afghan army and police units. Those advisers will be quite vulnerable to attack.Peter Bergen: NATO troops falling victim to shooting by Afghan forcesHe says the trust that once existed between NATO, Afghans has been erodedPlans for drawing down U.S., NATO troops assume handover of duties to AfghansBergen: Does NATO have a Plan B? 
 Questions:Monday's shootings were the latest in a wave of attacks on international troops by Afghan security forces, prompting concerns over the stepped up frequency of what _ terms "green-on-blue" incidents. (A) CNN (B) NATO (C) Afghanistan (D) Afghan (E) U.S. (F) United States (G) Peter Bergen (H) Afghans (I) Bergen (J) Plan B
Solution:
(B)