Generate an explanation for the given claim using the provided supporting material from the paragraph. Please consider the following points while generating an output. 1) The claim will always have supporting proof in the paragraph, and the paragraph will have a clear point of view supporting the claim. 2) There can be instances where direct correlation to the claim is not available. Make use of the sentences in the paragraph to provide a corresponding output supporting the claim. 3) The explanation should be at least one and at most twelve sentences long.

[EX Q]: Paragraph: The Midwest was the hardest-hit region, as temperatures plunged below zero Fahrenheit (minus 18 degrees Celsius). By nightfall the mercury was hovering at 0F in Chicago, 7F (minus 14C) in Detroit and minus 21f (minus 29C) in Minneapolis. Local television pictures showed the Chicago River and Lake Michigan filled with chunks of ice. The brutal blast known as the polar vortex is a stream of cold air that spins around the stratosphere over the North Pole, but whose current has been disrupted and is now pushing south into the United States. Officials warned Chicago residents, accustomed to chilling winters, to expect an unusually deep and dangerous freeze. Even the city's supply of its signature deep-dish pizza was affected: The Lou Malnati's chain announced it would stop taking delivery orders at 8 p.m. on Tuesday. "This could possibly be history-making," said Ricky Castro, a National Weather Service meteorologist in Romeoville, Illinois. As much as two feet (60 cm) of snow was forecast in Wisconsin, and six inches (15 cm) in Illinois. Snow was expected through Wednesday from the Great Lakes region into New England. Some Chicago residents found warmth inside the Harold Washington Library Center, which planned to stay open on Wednesday. Gilbert Rothschild, 79, walked through a corridor wearing three sweaters and an undershirt underneath his parka. "The more layers, the more you're insulated," he said. Rothschild, the president of a liquor retailer, said he planned on keeping his stores open on Wednesday, figuring customers who were not working might want to pick up something to keep them feeling warm at home. Many Midwest cities opened warming shelters. Regional governments closed hundreds of schools and airlines canceled more than 2,000 flights, according to the Flightaware flight tracking website. Many had been destined for Atlanta, where the National Football League's Super Bowl will take place on Sunday. Amy Patterson, a vice president at the Atlanta Super Bowl Host Committee, said there would still be time for fans to fly to Atlanta for the game, with the National Weather Service forecasting a high of a balmy 58F (14C) on Sunday. A low of minus 10F (minus 23C) was forecast in Chicago and elsewhere in northern Illinois on Wednesday. But with the wind chill factored in, temperatures will feel as low as minus 50F (minus 46C) through Thursday, the National Weather Service reported. Temperatures could reach lows of minus 30F to minus 40F (minus 34C to minus 40C) in parts of the Northern Plains and Great Lakes on Wednesday, the NWS said. The freezing weather may have killed a man in Rochester, Minnesota, who was found dead outside his home on Sunday, according to a report by WCCO, a local CBS affiliate. Rochester police officials did not respond to a request for comment. Jim Hayes, a National Weather Service meteorologist, warned that frostbite was possible within 10 minutes in the intense cold. For many across the region, life ground to a halt. In Chicago, home to the nation's third-largest school system, officials plan to cancel classes for all 360,000 students on Wednesday due to the weather. Detroit also said all public schools would close, and Michigan State University said it would suspend classes, only the seventh time it has done so because of weather since 1855. The Chicago Zoological Society said it would shut Brookfield Zoo for only the fourth time in its 85-year history on Tuesday and Wednesday. According to the National Weather Service, the coldest recorded temperature in Chicago was minus 27 degrees (minus 33C) on Jan. 20, 1985. Officials in Des Moines, Iowa, opened warming shelters, but also suggested residents could stay warm inside shopping malls. In Georgia, Governor Brian Kemp shut government offices in 35 counties on Tuesday, and schools across parts of the state were also closed. In Fargo, North Dakota, where the temperature dropped to minus 24F (minus 31C), Dan Hallock, an advertising executive, marveled that people were still working outside as he bought coffee. "The garbage men of Fargo have my utmost respect," he said. Claim: Polar vortex freezes U.S. Midwest with snow, dangerously cold air.
[EX A]: A blast of Arctic air from the polar vortex brought dangerous, bone-chilling cold to a wide swath of the United States on Tuesday, stretching from the Dakotas through Maine, with snow expected as far south as Alabama and Georgia.

[EX Q]: Paragraph: Michelle Obama is visiting Tanzania on the last day of President Barack Obama's eight-day tour of Africa. She helped Laura Bush open a summit of the wives of African leaders, saying Africa was "at the hub of global development". The summit aims to promote women's well-being on the continent. The unusual Obama-Bush combination spotlights U.S. interest in the continent and the importance of Africa to the legacy of the president and his predecessor George W. Bush. For Obama, his three-nation tour has given him a break from a row over spy agency eavesdropping and a chance to promote U.S. commercial interests to a receptive African audience. Bush, who launched a widely praised program to combat HIV/AIDS in Africa when in office, was due to join Obama for a ceremony to remember the victims of the 1998 U.S. embassy bombing in the Tanzanian capital. An expansion of a program to detect and treat cervical and breast cancer, Pink Ribbon Red Ribbon, is due to be announced on Wednesday, organizers said. Former President Bush is due to speak at the first ladies' summit the same day. The United Nations and non-governmental groups, including Bush's foundation, launched Pink Ribbon Red Ribbon to provide health services to women in sub-Saharan Africa and Latin America, building on the U.S. HIV/AIDS prevention program. Claim: Michelle Obama, Laura Bush spotlight Africa women's health.
[EX A]: U.S. First Lady Michelle Obama and predecessor Laura Bush combined their star power to draw attention on Tuesday to efforts to improve women's health and welfare in east Africa.

[EX Q]: Paragraph: She is in a bind because of her persistent refusal during two straight presidential debates to say whether she would raise taxes on the middle class to pay for the universal health insurance plan known as "Medicare for All." By not acknowledging taxes would almost certainly increase for a wide range of income earners, Warren avoids becoming a caricature of a Democrat itching to raise them. But she also threatens to undermine the image she's fostered of a plainspoken former professor ready to tackle any issue in her quest to protect the middle class from the excesses of corporations and the wealthy. Warren's progressive rival, Bernie Sanders, has said middle-class taxes would have to rise to pay for Medicare for All. Other White House hopefuls said Wednesday that Warren should be just as direct. "Look, I'm not picking on Elizabeth Warren, but this is ridiculous," said former Vice President Joe Biden, currently Warren's chief competitor for the Democratic nomination. Warren "is going to have to tell the truth" or face questions about her willingness "to be candid and honest with the American people." Minnesota Sen. Amy Klobuchar said Warren "needs to come forward and say" how she'd pay for a new health insurance system. "I'm sure she will eventually," Klobuchar said. Pete Buttigieg, the mayor of South Bend, Indiana, echoed that thought from the campaign trail in Ames, Iowa. "Everybody should be prepared to defend their plans," he said Wednesday. "It's serving us well to be very clear about how our plan works and to lay out the fact that it's paid for." Warren argues pundits are missing the point by focusing on taxes instead of the bottom-line cost that Americans pay for their health care. She insists that eliminating premiums and co-pays under Medicare for All would lower overall costs for all but wealthy Americans. Her top supporters say she should keep pressing that message. "Democratic voters are actually very appreciative that, on the substance, she wants to bring down health care costs, and, on the politics, she's not taking the bait and giving Republicans and the insurance industry the TV ad moment that they want to deceive voters," said Adam Green, a liberal activist and close Warren ally. Still, the lack of specificity on paying for Medicare for All is tricky since Warren famously is the candidate who "has a plan" for everything and proudly sweats even the smallest, wonkiest details. On health care, she says that she's "with Bernie," referring to the Vermont senator who authored the Medicare for All legislation in Congress. Warren's campaign says that no one yet knows Medicare for All's final price tag but that Warren is still "reviewing the revenue options" previously suggested by Sanders and that she has been very consistent and clear in saying she'll pay for it by adhering to the principles of lowering overall costs for middle-class families and raising them for rich people and major corporations. Democratic presidential candidates traditionally go to great lengths to avoid the idea that their party is tax happy. But being blunt about raising taxes is not necessarily an election loser, as long as their effect is targeted. President Barack Obama was reelected in 2012 following a pledge to raise taxes on top earners and did so by allowing previous tax cuts on the wealthy to expire. And Warren's promises of a 2% wealth tax on households with a net worth of more than $50 million elicits chants of "2 cents!" at her rallies, bolstering her reputation as an economic populist. The generous benefits Warren is promising surpassing other countries with government-run health care would require tax increases of a historic magnitude to guarantee cradle-to-grave care for every U.S. resident, however. And that will make it harder to finance the program with surgically targeted tax increases on corporations and the wealthy. A study released Wednesday from the Commonwealth Fund and the Urban Institute estimated the government would need $2.7 trillion in additional revenues if Medicare for All were fully implemented next year. That's more than half the current federal budget, and Washington is already borrowing heavily to meet its obligations. "It's a huge tax increase," said Urban Institute health economist John Holahan. "If you just lay it on a small group of people, how do you get those numbers?" Targeting income brackets also means necessarily picking winners and losers and a person's health status at any given time could determine what side of the ledger they wind up on. "The success or failure of major health reform plans always hinges on who would win and who would lose, and we don't have the detail for the Medicare for All plans to judge that," said Larry Levitt, a senior health policy expert with the Kaiser Family Foundation. Support for Medicare for All has fallen slightly since the beginning of the year, even as Warren and Sanders have championed it. An October poll by the Kaiser Foundation found 51% of Americans favor the plan, while 73% said they support a public option that would compete with private health insurance. Among Democrats, support for a public option has outpaced support for Medicare for All, 85% to 71%. A public option is backed by more moderate Democratic hopefuls, including Biden and Buttigieg. Traditionally, the U.S. has paid for social insurance programs with broad-based taxes. Medicare's financing includes a payroll tax, money from the Treasury's general fund and premiums paid by seniors. Sanders has laid out some options for Medicare for All, including a payroll tax on employers, a "premium" tax on households making more than $29,000 for a family of four and higher taxes on the wealthy which is further than Warren has gone in explaining where the funding will come from. Releasing a more detailed health care proposal of her own could at least start to address these issues for Warren. But her advisers have long maintained that, while she may eventually do so, it isn't imperative. "What resonates is not an academic version of her plan it's her personal story of struggle connecting with the real-world impact of her plan on everyday families," Green said. "Medicare for All is about the principles, not the micro-mechanisms for putting it altogether." ___ Associated Press writers Emily Swanson in Washington, Hunter Woodall in Keene, N.H., Thomas Beaumont in Ames, Iowa, and Julie Carr Smyth in Columbus, Ohio, contributed to this report. Claim: Warren, candidate with the answers, dodges tax hike question.
[EX A]:
Elizabeth Warren is rising to the top of the Democratic pack with ambitious promises to reshape the political and economic system. But as she faces growing scrutiny, the Massachusetts senator is opening herself to criticism that she's just another politician dodging the tough questions.