Given the task definition and input, reply with output. 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 _ .

(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

First missing Chibok girl found after 2 years as prisoner of _.