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].
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Question: (CNN) -- President Barack Obama is poised to make his case to the country on the next steps for tackling the threat posed by ISIS. Certainly, ISIS' advances this summer -- including the seizure of territories in Iraq and Syria, declaration of a new "caliphate," and its killings of thousands in Iraq and Syria, including two American journalists -- have been a wake-up call. What should the President keep in mind as he prepares to deliver his speech Wednesday? Here are five key questions he should answer in his speech and as he follows up in the coming weeks: What metrics will the United States use to gauge the success of airstrikes in Iraq and possible additional strikes in Syria?President Barack Obama is set to outline his strategy to counter ISIS on WednesdayObama should outline how exactly he will gauge success, say Brian KatulisBuilding lasting coalitions will be essential, Katulis writesKatulis: Administration should make clear what support it will offer forces opposing ISIS 
 Question:Inside of Iraq, millions have been displaced by the multiple waves of conflict inside the country, including the most recent conflict in northern _ with ISIS.

Answer: Iraq


Question: (CNN) A girl rescued by Nigerian troops from Boko Haram militants does not appear to be one of the girls abducted in 2014 from a school in the town of Chibok, as was initially reported, an activist said Friday. Serah Luka, who was rescued Thursday, did attend the school, but wasn't abducted at the same time as the 276 taken from the school on April 14, 2014, according to Bukky Shonibare of the #BringBackOurGirls campaign. "However, the same way we rejoice over the return of the Chibok girl, so also is our joy over this one," Shonibare said. A Nigerian army officer said Thursday that Luka was part of the mass abduction. On Friday, Army Brig. General Abubakar Rabe declined to address whether Luka was part of that abduction.Activist says girl rescued Thursday was not part of 2014 mass abductionGeneral says what's important is not how she was abducted, but her rescueMore than 200 Chibok schoolgirls remain missing after being snatched by Boko Haram 
 Question:First missing Chibok girl found after 2 years as prisoner of _.

Answer: Boko Haram


Question: (CNN) "Yessssss!" was my reaction to hearing the news that the U.S. Food and Drug Administration intends to regulate e-cigarettes, hookahs, vape pens, e-pipes and other electronic nicotine delivery products. As a family physician, I often have patients ask me about e-cigarettes. Some have seen advertisements and are wondering what they are; some have simply heard that e-cigarettes are safer than traditional cigarettes and want to know if this is true. E-cigarettes are included in the category of ENDS -- Electronic Nicotine Delivery Systems -- products that use a liquid containing nicotine and varying amounts of flavor, glycerin, propylene glycol and other ingredients. This liquid is heated into an aerosol that users then smoke. It is often referred to as "vaping."Jennifer Caudle says FDA regulation of electronic nicotine delivery systems is overdueMore research needed on long-term effects, especially as youth use skyrockets, she says 
 Question:The _ also reports that 16 percent "of high school and 5.3 percent of middle school students were current users of e-cigarettes in 2015, making e-cigarettes the most commonly used tobacco product among youth for the second consecutive year."

Answer:
FDA