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].

(CNN) Hillary Clinton saw Bernie Sanders' New Hampshire blowout and raised him one in South Carolina. Riding the strength of her support among African-Americans to a resounding victory in the Palmetto State, Clinton seized the momentum in the Democratic presidential race -- winning her third of four early-state contests just three days before the race goes national on Super Tuesday. Here are five takeaways from South Carolina's Democratic primary: Clinton's going national It was a bumpy ride through the early states -- but Clinton's firewall of minority support held, helping her seal a close contest in Nevada and then turn South Carolina into her first dominant win of the 2016 race. Headed into Super Tuesday, the confidence Clinton's campaign had after October and November is back.Clinton's firewall not only held, but her blowout win gives her new momentum into Super Tuesday84% of African-American voters went for Clinton 
 Question:Two more important exit poll findings: Most voters say race relations haven't improved in recent years -- and very few Democratic voters trust _ more than Clinton on race-related issues.
Bernie Sanders

Washington (CNN) China has agreed to return the US underwater drone that it seized in international waters earlier this week, the Pentagon said Saturday. "We have registered our objection to China's unlawful seizure of a US unmanned underwater vehicle operating in international waters in the South China Sea. Through direct engagement with Chinese authorities, we have secured an understanding that the Chinese will return the UUV to the United States," Pentagon spokesman Peter Cook said in a statement. Details were not immediately available on when or how the drone may be returned. Earlier, China's Defense Ministry said authorities had decided to return it, but criticized the US for having "hyped up" the issue. President-elect Donald Trump weighed in on the incident, calling China's action "unprecedented."China said the US had "hyped up" the issueTrump called China's action "unprecedented" 
 Question:"Upon confirming that the device was a US underwater drone, the Chinese side decided to transfer it to the US side in an appropriate manner," Chinese _ spokesman Sr. Col. Yang Yujun said.
Defense Ministry

(CNN) As the Zika scare ramps up in south Florida, Miami-Dade County Mayor Carlos Gimenez said authorities will target 10 square miles north of downtown Miami to combat the virus. Citing recommendations from the Centers for Disease Control and Prevention -- which issued a travel warning Monday -- and the Florida Department of Health, Gimenez said the mosquito control team would start spraying the area, which includes the Wynwood neighborhood, by Wednesday morning. "I ask all residents to continue to do their part by draining standing water, protecting ourselves and our families by using mosquito repellant and covering up when going outdoors, especially during early morning and evening hours," Gimenez said Tuesday.Miami-Dade County begins spraying a 10-mile area to curtail Zika virusCDC issues travel advisory for pregnant women and their partners 
 Question:"The _ advises them to stay away from the area."

CDC