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].

Q: Virginia is poised to execute a convicted serial killer who claims he's intellectually disabled using lethal injection drugs from Texas because the state's supply of another controversial drug will expire the day before the execution is supposed to take place. Unless Gov. Terry McAuliffe or the U.S. Supreme Court steps in this week, Alfredo Prieto will be executed Thursday - the first Virginia inmate to be receive the death penalty in nearly three years. The El Salvador native was already facing execution in California for raping and murdering a 15-year-old girl when a Virginia jury sentenced him to death in 2010 for the 1988 killings Rachael Raver and her boyfriend, Warren Fulton III.Alfredo Prieto raped and murdered a 15-year-old girl in CaliforniaHe also murdered a Virginia couple in 1988 and will be executed ThursdayPrieto claims he has a 'significant brain dysfunction' from a malnourished childhood in El Salvador but psychologists say he is brightThe state will use a lethal three-drug cocktail partially supplied by TexasVirginia has executed 110 people since 1976, the third highest state 
 Question:_ officials agreed to send him to Virginia on the rationale that it was more likely to carry out the execution.

A: California
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Q: Montgomery, Alabama (CNN) President Donald Trump's endorsement and Senate Majority Leader Mitch McConnell's money carried their preferred candidate over the first hurdle in Alabama's Senate race Tuesday. But the results showed why the second hurdle will be much tougher to clear. Sen. Luther Strange, the national Republicans' preferred candidate, topped Rep. Mo Brooks to finish second Tuesday and advance to a runoff against controversial former Alabama Supreme Court Chief Justice Roy Moore. But Moore was the clear first-place finisher, earning 39% of the vote, compared to 31% for Strange and 19% for Brooks, with 95% of precincts' results tallied. Moore and Strange will now face off in a September 26 runoff to determine who will face Doug Jones -- who cruised through Tuesday's Democratic primary -- in the December special election to fill Attorney General Jeff Sessions' former seat.Roy Moore and Luther Strange will now face off in a September 26 runoffStrange, previously Alabama's attorney general, filled the seat in February 
 Question:Moore predicted that "the most negative campaign ads in the history of _" will be aired against him by pro-Strange groups, and said it's up to voters to reject them.

A: Alabama
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Q: (CNN) -- The promoter for Filipino world champion boxer Manny Pacquaio, Bob Arum, has confirmed the "super fight" with American Floyd Mayweather Jr. will not happen after mediation talks between the two parties failed. "The fight is off, Floyd Mayweather walked away," Arum told the USA Today newspaper in a telephone interview on Wednesday. Pacquiao and Mayweather had asked retired federal judge Daniel Weinstein to help the two parties resolve a dispute, which had threatened to derail what was expected to be the most lucrative bout in the history of the sport. However, after two days of further negotiation, Arum said no agreement could be made with Mayweather, with the result that both fighters would now miss out on a potential purse of $40 million each.Top Rank promoter Bob Arum, confirms the "super fight" with American Floyd Mayweather Jr. is offThe two camps failed to resolve a bitter dispute over the issue of drug-testing before their match-upRetired judge Daniel Weinstein failed to secure agreement for what could have been the most lucrative fight in historyPacquiao will now fight undefeated Israeli WBA super welterweight champion Yuri Foreman 
 Question:The welterweight title bout was thrown into doubt when _ demanded that random drugs testing should be employed before the fight, a request that prompted Pacquiao to take legal action for defamation.

A:
Floyd Mayweather Jr.
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