In this task, you will be shown a passage. You need to write a fill-in-the-gap question based on your understanding of the events that might be inferred from the passage. Your question should be answerable based on the passage and only have one correct answer. Show the gap in your question with a _ .

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 August. She 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
Example output: 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.
Example explanation: This is a good example. Based on the passage you can answer this question.
Q: (CNN)In one month Nigerians will vote in what may be the country's most competitive and contentious elections yet. But this important process will take place in the shadow of a worsening threat -- Boko Haram, the Islamist insurgent group otherwise known as Jama'atu Ahlis Sunna Lidda'awati wal-Jihad, which killed as many as 2,000 people in the northeastern town of Baga on January 3. The attacks of the past few weeks -- Boko Haram's biggest ever in terms of casualties on Baga, and on markets using children to detonate devices -- have drawn international focus back to the crisis. But such appalling events are not new -- they are an intensification, a next step in a crisis which has steadily worsened since Boko Haram's 2010 reemergence. And they raise a number of questions about the trajectory of the insurgency and the response to it.Boko Haram massacred as many as 2,000 people in Baga, Nigeria on January 3Donnelly: Taking Baga helps group consolidate control in northeast NigeriaDonnelly: Group's tactics are unclear; Boko Haram kills because it can
A:
There still isn't a clear picture of what happened at _ and who did the killing -- the age, the motivation, the state of mind of what may have been militants, conscripts or armed and terrified child combatants.