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) Infuriated after a pregnant black woman was shot and killed by police, protesters marched from the apartment building where Charleena Lyles died to downtown Seattle on Thursday night. "Say her name!" one man shouted. The crowd roared back: "Charleena!" They marched through downtown yelling, "Hey, hey, ho, ho. Racism has got to go." Police say two officers opened fire after Lyles, 30, confronted them with two knives on Sunday. Her family and community members blasted their decision to use deadly force on the mother of four and questioned why other alternatives weren't used. "We continue to have black men and women being shot and killed by police," Michelle Sarju who attended the march told CNN affiliate KOMO. "At some point, we have to do police reform. I grew up in a family of police officers and this is an embarrassment to the profession my grandfather and my dad chose."Protest held after police shooting of Charleena LylesPolice have released audio from two officers, Lyles' 911 call and hallway video from her apartment 
 Question:On Sunday, shortly before 9 a.m., _ called 911 to report a break-in and told the operator that her door was open and that "there's stuff missing," from her home.

Charleena Lyles