Definition: 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].
Input: (CNN) A police officer accidentally shot and killed a retired Minnesota mother of two during a civilian police drill in Punta Gorda, Florida, that was supposed to employ only blank ammunition, police said. The officer, identified as Lee Coel, shot Mary Knowlton on Tuesday night during a "shoot/don't shoot" role-play scenario in which officers make decisions on using simulated lethal force, Punta Gorda Police Chief Tom Lewis said at a news conference. The retired librarian was playing an officer in the scenario, which was held just outside the police complex, officials said. Coel was playing the role of a "bad guy" when he opened fire as nearly three dozen people looked on.Lee Coel, officer who accidentally killed woman, joined force in 2014Police chief: Gun used in a demonstration accidentally had a live round in it 
 Question:_ was transported to a local hospital where she was pronounced dead.

Mary Knowlton