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: Moscow (CNN) -- Russia's upper house of parliament voted Wednesday to revoke the right of President Vladimir Putin to use troops in Ukraine as efforts continue to calm a separatist uprising in Ukraine's east. The Federation Council had approved Putin's request for a resolution allowing the use of force on March 1. But Tuesday, Putin sent a letter to the speaker of the upper house seeking to cancel the resolution. One lawmaker voted against revoking the powers Wednesday, with 153 in favor. Putin's request was made in light of ongoing talks on how to settle the crisis in Ukraine's eastern regions, said presidential spokesman Dmitry Peskov.NATO agrees to a package of support to help Ukraine defend itselfRussia's Federation Council cancels resolution authorizing use of troops in UkrainePresident Vladimir Putin asked for the step in light of peace talks, his spokesman saysJohn Kerry and other NATO foreign ministers are meeting in Belgium 
 Question:The parliamentary action is a positive step, _ said, but it could be easily reversed.

Answer: John Kerry


Question: (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:While _ won white men 56% to 44%, Clinton won white women 60% to 40%.

Answer: Bernie Sanders


Question: Victim: Dr Martin Luther King The FBI repeatedly deceived Congress by destroying vital files relating to the assassination of Martin Luther King, a new book claims. Leading King historian Stuart Wexler said that the bureau chose to cover up the potential role of a high level informant in the killing rather than tell the truth. Wexler said that it could have been one of the greatest scandals in the history of the FBI - but now we may never know what happened. By destroying the files the FBI disobeyed a direct order not to do so from a Congressional Committee which had been set up to investigate the killing of King and former President John F Kennedy.FBI accused in new book - by leading King historian Stuart Wexler - of misleading Congress by destroying files on civil rights leader's murderHe tells Daily Mail Online agency disobeyed direct order to preserve all materials and believes it was to protect informer from being identifiedTommy Tarrants, high-ranking KKK member went from being little-known racist to having his picture shown to witnessesFiles from two field offices which had information on Tarrants were destroyed in 1977 after Congress launched Assassinations CommitteeWexler believes it is because they could have exposed Laude Matthews, head of Mississippi KKK, as an FBI asset under deep cover 
 Question:KKK: Tommy Tarrants was a figure in the _ and seemed initially marginal to the investigation into the MLK murder but was suddenly made a significant figure.

Answer:
KKK