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.

Paragraph: As the new coronavirus spreads from China, travel guidelines being issued by governments across the world all express notes of growing caution. But they contain subtle differences on where to avoid, how to behave and what to do after a trip. With few exceptions, the prevailing advice of national authorities is to avoid Hubei province - epicenter of an outbreak that has now infected 80,000 people worldwide - and to reduce Chinese travel to the bare minimum. Once inside China, Swiss travelers for example are urged by their government to avoid large gatherings and "cough or sneeze into a tissue, or use the crook of your arm". France tells its nationals not to eat raw meat or visit animal markets. The Spanish Foreign Ministry also urges against contact with animals in China and suggests making sure that you stay at least one meter away from the next person. For travelers to Italy - the country most badly hit by the virus in Europe - the Dutch government recommends that its citizens avoid areas already locked down by local authorities and only travel to parts of the wider Lombardy region around the closed-off towns if necessary. The Finnish Foreign Ministry advice on Italy is simply to "take special care". Differences also emerge in the advice to travelers on their return from an affected area. Germany's main authority for infectious diseases tells those returning with symptoms from outbreak regions in Italy to see a doctor and call prior to their visit. But France asks such people not to visit the doctor but to call emergency services. Britain urges its nationals to "self-isolate" at home if they have been to the areas quarantined by Italy whether or not they have symptoms. The Danish Health Authority currently stipulates no routine quarantine or isolation of people who have traveled to China or other places hit by the outbreak. Countries outside Europe take different stances. Turkey advises against all but essential travel to China but has not yet issued travel advice on Italy. Nigeria has a voluntary two-week self-quarantine in place for all passengers arriving from China or any country with "a major outbreak". Guidance for returning air passengers says "try to avoid" going out but wear a mask if you do. Claim: Coronavirus travel: national advice not all of a piece.
Should travelers avoid parts of the world near coronavirus hotspots? Or go - but then tread carefully? The official advice they receive may depend on whether they live in Amsterdam, Helsinki, Madrid or Lagos.

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.
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.

Paragraph: This is a sentence spoken by Trump, not a piece of modernist stream-of-consciousness pastiche. pic.twitter.com/vfhdKzg9Uy Stig Abell (@StigAbell) August 9, 2016 On 19 July 2016, Republican presidential candidate Donald Trump appeared at Sun City's Magnolia Hall in South Carolina to deliver a noontime speech. The event was an otherwise unremarkable campaign stop, save for one portion of Trump's speech (transcribed below) in which he apparently started out attempting to criticize the nuclear deal that the Obama administration negotiated with Iran but veered into a minute-and-a-half long sentence that spanned his uncle's academic qualifications, his own education, Democrats' denying Republicans' credentials, the power of nuclear technology, the number of American prisoners freed by Iran in conjunction with the nuclear deal, and the adeptness of "Persian" negotiators (particularly women), before circling back to how the Iranians "killed us" in the nuclear deal: "Look, having nuclear my uncle was a great professor and scientist and engineer, Dr. John Trump at MIT; good genes, very good genes, OK, very smart, the Wharton School of Finance, very good, very smart you know, if you're a conservative Republican, if I were a liberal, if, like, OK, if I ran as a liberal Democrat, they would say I'm one of the smartest people anywhere in the world it's true! but when you're a conservative Republican they try oh, do they do a number that's why I always start off: Went to Wharton, was a good student, went there, went there, did this, built a fortune you know I have to give my like credentials all the time, because we're a little disadvantaged but you look at the nuclear deal, the thing that really bothers me it would have been so easy, and it's not as important as these lives are nuclear is so powerful; my uncle explained that to me many, many years ago, the power and that was 35 years ago; he would explain the power of what's going to happen and he was right, who would have thought? but when you look at what's going on with the four prisoners now it used to be three, now it's four but when it was three and even now, I would have said it's all in the messenger; fellas, and it is fellas because, you know, they don't, they haven't figured that the women are smarter right now than the men, so, you know, it's gonna take them about another 150 years but the Persians are great negotiators, the Iranians are great negotiators, so, and they, they just killed, they just killed us, this is horrible." The one thing that puzzles us the most about this sprawling statement is this: Donald Trump's late uncle, Dr. John Trump, was indeed a renowned professor at MIT, and among his many notable contributions to science were developing methods for treating cancer through radiation and studying how to radiate deep tumors without harming nearby healthy tissue. But what did he reveal to his nephew about "nuclear" 35 years ago that it would have been surprising for anyone to think of? Claim: A tweet reproduces a 90-second long sentence from a Donald Trump speech.
"My uncle used to tell me about nuclear before nuclear was nuclear" and "He would tell me, 'There are things that are happening that could be potentially so bad for the world in terms of weaponry,'" Donald Trump has claimed, even though the U.S. had already developed and used nuclear weapons before he was born (1946). Could anyone have really been unaware or doubtful that "nuclear is powerful" in the 1980s, when Dr. Trump supposedly informed his nephew of that fact?