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.

Example Input: 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.
Example Output: 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.

Example Input: Paragraph: With global warming widely expected to slash snowfall, especially at lower levels, the Swiss tourism industry is looking for ways to preserve a lucrative business brutally exposed to the weather. Enter Napa, Serbia's last circus bear. The Arosa ski resort in eastern Switzerland has created a $6.5 million refuge hosting Napa and two other bears rescued from cages at restaurants in Albania to help draw summer visitors and reduce its reliance on skiers and snowboarders. School classes, families and a group of army veterans celebrating an 80th birthday were visiting one recent summer day, helping the park toward what Arosa tourism director Pascal Jenny said was a target of 50,000 visitors this year. Arosa has reinvented itself before - moving to winter tourism in the 1930s after decades as a health resort for tuberculosis patients. But with nearly 620,000 overnight stays in winter last year, more than three times the summer total it will not be easy. Jenny, who fears a sharp decline in snowfall over the next 20 or 30 years, is hedging his bets. "What gives us some hope is that artificial snow is making strong technical advances. I can make snow now at 5 degrees above freezing," he said, standing on an observation platform beside the Weisshorn cable car which gives a sweeping view of the snow-capped Alpine valley. His two-pronged approach highlights the dilemma faced by mountain resorts how to retain profits as they embark on what the Organisation for Economic Co-Operation and Development (OECD) says needs to be a global rethink of tourism. "The consequences of climate change will be felt across the travel and tourism sector over the coming decades," the OECD, whose member countries represent 80% of the world's trade and investment, said in a 2018 study of megatrends in tourism. Storms, flooding and tidal surges will threaten coastal regions, southern destinations face extreme heatwaves and northern ones will see shorter periods of snowfall, it said. Mountain resorts tend to be higher in Switzerland than in Austria or France, giving them better chances as snow becomes scarcer. But even at 3,000 meters, pistes could see snow depths more than halved by 2100 if greenhouse gas emissions are not curbed, a report in The Cryosphere, a peer-reviewed geosciences journal named after the frozen water parts of the Earth, said. Resorts below 1,200 meters - as about a quarter of Alpine ones are - might get almost no snow, said the 2017 report, whose title starts "How much can we save?". Snow levels will gradually stabilize if global temperature rises are contained, it says. Arosa is 1,775 meters up but Jenny worries that a loss of snow in the lowlands will cost it visitors because people will lose their emotional connection with snow. "That is almost more dangerous for the sector," he said. Hence his interest in an industrial estate in Denmark, where Arosa is cooperating on a project to make artificial snow so that urban dwellers can learn to ski and then, he hopes, go on to hone their skills in the Alps. The economics are clear: a daily lift pass for skiers in Arosa costs 79 Swiss francs ($80.27), while a summer hiker or mountain biker typically pays 18 francs for a pass that lets them use a rope park, a swimming area and paddle boats on the town's lake. Hotels and restaurants charge more in winter too, but the strong Swiss franc has priced many people out. Switzerland is one of the wealthiest countries in the world, and the Swiss government says the long-term outlook for tourism is healthy. "Mountain summers can position themselves as an alternative to the Mediterranean regions," a 2017 report said. Summer tourism already accounts for 60% of overnight stays across Switzerland, but the season brings in only 18% of revenue, said Therese Lehmann, an economist at the University of Bern's Centre for Regional Development. Government data already shows a 24% drop in skiers in the decade to 2016, with other factors as well as climate change. "The decline of ski tourism a powerful economic engine will have more of an impact than the additional revenue in summer," said Dominik Siegrist, director of the Institute for Landscape and Open Space at Switzerland's University of Applied Sciences Rapperswil. Europe's population is aging and younger people are less interested in skiing. Snowshoeing, winter hiking, sledding and ski touring in which people hike up mountains, are on the increase, industry lobby Swiss Tourism says. Consolidation of winter tourism is on the horizon, with overnight stays in bigger Swiss resorts up 1 percent in the decade to 2015, but down 17 percent in smaller ones. "Lots of smaller ones are grasping at straws, trying to survive as long as they can because the valleys depend on this tourism," Siegrist said. Large resorts in the Swiss cantons of the Grisons and Valais, Austria's Tyrol province and France's Savoie region have the marketing pull to survive, Siegrist said, listing high- altitude Andermatt, Zermatt and St Moritz in Switzerland. The Andermatt Swiss Alps resort, in central Switzerland, is targeting cyclists in summer, and has also built new lifts to lure winter sports fans. It covers a nearby glacier with strips of artificial fleece in spring to help reduce melting and creates piles of snow higher than houses to deploy on ski pistes as early as November to avoid having to use expensive artificial snow. The strong Swiss franc has hit ski lifts focused on winter business from European visitors hard in the past 10 years, the government says, but the minority of lifts with strong summer business are booming thanks to visitors from overseas. Many smaller lift firms get cheap loans and, increasingly, state subsidies to help balance the books, said Lehmann. Roughly a third are debt-free, but depend on long-haul tourism, which she said was not ideal from an environmental point of view, because flights are a major contributor to holiday carbon emissions. "Maybe we have to get away from focusing solely on growth, and promote Alpine areas as good habitats for living, not just for tourism," she said. Listed cable car companies Bergbahnen Engelberg Truebsee Titlis Bet AG (TIBN.S) and Jungfraubahn Holding AG (JFN.S), cite year-round visitors from Asia - especially China and India - as important sources of income. Asked about sustainability, Titlis marketing director Peter Reinle said the firm's prospects were good for the next 50 years. "We as a single entity can not solve the whole climate problem. Politicians have to provide framework conditions." Jungfraubahn's Corporate Secretary Christoph Schlaeppi said it employed 800 local people, helping to make life in the mountains economically sustainable for a new generation. The government says it is up to individual resorts to decide how much they want to attract Asian groups, but focuses its own promotion efforts on individual travelers and sustainability, noting Japanese tourists now come independently and stay longer. "We have to see that guests from Asia making the long flight to Europe or Switzerland stay as long as possible," Richard Kaempf, head of tourism policy at the State Secretariat of Economic Affairs, told Reuters. While the government encourages year-round use of mountain infrastructure, he said it is not giving up on winter sports, a deep cultural touchstone for the Swiss. But he acknowledged the growing challenge of lowlanders losing the "winter feeling". Claim: High and dry: Alpine resorts grapple with climate change.
Example Output: The prospect of searing heatwaves driving holidaymakers to cool mountains and children asking grandparents about their memories of snow is focusing minds in Alpine ski resorts on the implications of climate change.

Example Input: Paragraph: There was no mentionof the potential costs of screening women for vitamin D levels (as encouraged in the release in a statement from the principal investigator) or the cost of supplementation. The release does a good job of comparing data and providing explanations for the measurements used. We'll award a Satisfactory for that precision, but as noted below under "Evidence," there was no explicit caution regarding the fact that measurements of interleukin-6 (IL-6) are only surrogates for the effects of weight loss and vitamin D on clinical outcomes related to inflammation (e.g. cancer diagnoses). IL-6 levels dropped in both the placebo and vitamin D arms, and it's not clear whether the statistically significant additional decline in IL-6 observed in the vitamin D group is clinically important. Because some of the participants were vitamin D-deficient and the dose of vitamin D provided was modest (2000 IU/d), this was a tough call. But supplementation is often so misunderstood, overhyped and oversold that some statement cautioning readers to pay attention to the specifics of this study and not apply its recommendations to everyone seems prudent. For the most part, the release provides a cautious and accurate description of what appears to be a well-conducted clinical trial in a well-defined population. For example, itnotes that weight loss and vitamin D lowered inflammation LINKED to cancer not that these things reduced cancer risk itself (something this study couldn't establish). But as noted above, we would have appreciated an explicit acknowledgment that IL-6 is a surrogate marker for the clinical outcomes that people care about. And more importantly, we're concerned about the closing commentthat women should talk to their doctors about measuring their vitamin D levels to determine the most appropriate dose. The problem is there is no evidence supporting screening or treating to a level and certainly not from this study. The US Preventive Services Task Force has concluded that evidence is insufficient to recommend routine vitamin D screening and the IOM has said that while there are data supporting the benefitsof vitamin D supplementation with bone health and fall prevention, there is no evidence supporting benefits for cancer. While testing may be warranted in those with signs or symptoms of clinical deficiency, the statement made here implies that everyone should be tested so that an appropriate dose of vitamin D can be selected. That goes beyond the available evidence. It's hard to argue that overweight, vitamin deficiency, chronic inflammation and cancer are not real threats, so no mongeringapparent here. Funding sources are well documented. The study didn't discuss alternative preventive measures or genetic causes of increased cancer risks. But this is such a broad and expansive topic that we don't think the release should have been expected to address those myriad issues. We'll rate this Not Applicable. Primary care physicians and other health providers are well positioned to monitor blood levels of vitamin D, along with dietary and exercise regimens. The news release makes that clear, albeit indirectly. As noted above, we think the release goes too far in suggesting that people ask their doctors about having their vitamin D levels checked. But we've already docked points for that, so we'll award a Satisfactory rating here. The release makes a case for this being the first clinical trial of its kind; although it's always difficult to make that statement absolutely, the writer of the release attributes the statement to the study author. As a general rule, it's probably best to say "believed to be the first." While the release meets our standard here, we also wish it had delved a bit into the background of previous vitamin D research and the conflicting and confusing messages that research has generated. Without that context, the typical reader might wronglyjump to the conclusion, based on the wording of the lede and other parts of the release, that this study of vitamin D supplementation because it was a controlled clinical trial has somehow settled the important questions about the role of vitamin D and inflammation in cancer risk. The debate remains alive and well. None detected. Claim: Weight loss plus vitamin D reduces inflammation linked to cancer, chronic disease
Example Output:
This news release describes a randomized, controlled clinical trial designed to learn whether adding vitamin D supplements to substantial weight loss regimens would have a synergistic effect in reducing inflammatory chemicals in the bodies of overweight, older women with levels of vitamin D considered too low. The study, published inCancer Prevention Research, has potential relevance for cancer prevention because inflammatory cytokines have been implicated in the genesis and progression of some cancers, as well as heart disease and other disorders. The release offers substantial details about the design, metrics and outcomes of the clinical trial and does a pretty good job of defining the possible reasons for the effects of chronic inflammation and weight loss on cancer development. It goes to some lengths to narrowly define the results and avoid overstatement. That said, the release ends on a sour note by encouraging readers to talk to their doctors about vitamin D testing a recommendation not consistent with U.S. Preventive Services Task Force guidelines and which is not supported by this research. Readers might also have been better informed if the release had offered more context regarding the many conflicting and sometimes confusing studies that have previously looked for links among vitamin D, inflammatory responses, diet, overweight, sun exposure and cancer. News releases that include the words "diet," "overweight," "vitamin," and "cancer" are almost narrative nuclear events, often guaranteeing an explosion of coverage, souped up vitamin sales pitches, and lots of negative fallout whose half-life seems forever. Cancer remains the second biggestkiller disease overall of Americans, and some experts believe that it will soon pushheart disease and stroke out of first place. Thus cancer prevention is a deservedly hot topic, and it is no surprise that Americans are eager for information about ways to limit their risk. News releases that describe research on these topics have enormous power to inform and misinform.