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. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].

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.
Solution: China
Why? This is a good example. Based on the passage, any cubs will return to China at the age of two

New input: Former New England Patriots player Aaron Hernandez can be seen on surveillance video walking through his home with a gun less than 10 minutes after prosecutors say he killed a man, according to testimony Wednesday by an employee of firearms manufacturer Glock. It was the most conclusive testimony to date in the monthlong trial that puts a weapon in Hernandez's hand around the time of the slaying. Hernandez is charged with murder in the killing of Odin Lloyd, who was dating the sister of Hernandez's fiancee. Lloyd was shot to death early on June 17, 2013, in an industrial park near Hernandez's home in North Attleborough, sending his last text message at 3:23am, and two witnesses have testified they heard loud bangs around that time.Aaron Hernandez can be seen on surveillance video walking through his home with a gun less than 10 minutes after prosecutors say he killed a manGlock employee Kyle Aspinwall testified that Hernandez can be seen switching a pistol from his right hand to his left in his living room at 12:45amThen, at 3:30am, Hernandez can be seen outside his basement as he faces the camera a few feet away while holding the object in front of himThe murder weapon has never been found 
 Question:The semiautomatic handgun uses .45-caliber bullets, and prosecutors have argued that based on ballistics evidence, a _ was the murder weapon.
Solution:
Glock