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: You need the right mix of factors to create ground-level ozone: sunlight, snow cover, little to no wind and, of course, emissions from the oil and gas industry which arrived in force more than a decade ago in the Jonah and Pinedale gas field. And this year the factors have been right more often than usual. Friday was the 12th ozone action day of the season a warning system from the Wyoming Department of Environmental Quality that forces industry to pull back when conditions for ozone are expected. It's a record number for recent years, and action days were issued for Saturday and Sunday as well. But there's something more troubling in the case of the Boulder area: ground-level ozone is regularly forming despite precautions. Breathing it in can cause a variety of health problems, from chest pain to reduced lung function. For reasons still unclear to state regulators, in one corner of the Upper Green, the rules and regulations that reversed an air quality crisis more than a decade ago haven't been enough, the Casper Star-Tribune reported . "We don't have all the answers, yet," Keith Guille, spokesman for the state Department of Environmental Quality, said. "It's definitely not being ignored. We understand that the public is concerned, as we are." ___ The Upper Green River Basin is a bowl-shaped area wedged between the Wind River and Wyoming ranges. That landscape holds bad air in place when there is no wind. Snowy and sunny years are worse for ozone action days, as was the case in 2017, the last year that ozone action days were a regular occurrence. There was nearly three times the amount of precipitation during the 2017 winter ozone season compared to historical averages, according to a fact sheet from the Wyoming Department of Environmental Quality. But the controllable factor, and the one that once precipitated the great ground level ozone crisis in the basin, is oil and gas. More than a decade ago, oil and gas activity degraded air quality to the point it was comparable to Los Angeles, and it changed the way Wyoming regulated industry in the basin, its pipes and compressor stations, trucks and holding tanks. Those regulations have been effective in driving down emissions. The rules are some of the strongest in the country and have inspired attempts by the Environmental Protection Agency and the Bureau of Land Management to institute similar rules across federal and Native American land though in both cases the Trump administration has recently pulled back on some of those standards. In addition to the ozone action days, Upper Green rules cover the use of equipment to track leaks and regular checks of infrastructure for damage. And during ozone season, in late winter and early spring, action days are an important part of how the Upper Green manages emissions. In the mix of ozone contributing factors, oil and gas emissions are the one thing regulators can pull back to try and keep ozone at bay. Action days are declared by the Wyoming Department of Environmental Quality as having the potential to create ground-level ozone. Operators in the Upper Green respond by following contingency plans to reduce emissions, such as reducing refueling and cutting truck idling. This year industry has had to scale back over and over. ___ Jonah Energy, which operates in a different area of the basin from where the Boulder exceedances have been happening, has scaled back its operations considerably due to action days this year, said Paul Ulrich, spokesman for the oil and gas firm. "Small stuff. We're turning off air heaters on pads during the day. Big stuff, shutting down workover rigs," Ulrich said. "Those have immediate production, operational and financial impacts that we are bearing." Jonah has demobilized its completion crew holding off on finishing wells and bringing them online until mid-April and it is delaying blowing down wells, he said. "I will tell you though, we plan for it. We train for it and we understand that we have an obligation to do everything we possibly can," Ulrich added. The outcome of those actions is evidenced in the lack of ozone exceedances, over an eight-hour period, this year near Jonah's operations, he said. But the rules and practices of today may not be enough, if ozone is still forming in the Upper Green, according to the DEQ. "In 2019, we feel whether or not you have a snow pack or not, we don't want to see those levels above the standard," said Guille, of the Department of Environmental Quality. Nancy Vehr, administrator of the Air Quality Division of the Wyoming Department of Environmental Quality, said she began reaching out to operators in the Boulder area, where more than 30 companies mostly oil and gas firms work, when the ozone spike began about two weeks ago. She asked them to find more ways to voluntarily cut emissions. And they did. But what's been unique about the Boulder problem this year is that the elevated ozone levels have been persistent, Vehr noted. "We've never had an eight-day stretch in one location," she said. But that area has been a problem in the past. Whether it's temperature or other factors, the Boulder monitor often picks up more air quality concerns than others across the basin, she said. Ulrich of Jonah said the ozone spikes of this year are a mystery, but it does appear to be isolated and not reflected across the basin, he explained. "The challenge for this particular season is it's been one monitoring station," he said. "From a scientific standpoint, that's a very new challenge for us all, to fully understand between operators and DEQ and others what's going on at that station." Everyone is going to have to come back to the table, Ulrich said. "We know we need to take a hard look at it after this year," he said. Vehr echoed that confidence in current rules, noting that it would be easier to look back over the data in retrospect and analyze patterns. When air quality was at its worst in the Upper Green, you could see it like an orange haze, said Bousman of Boulder. Despite the exceedances this year, the rancher said he hadn't noticed the air quality being any different. Like everyone else, he wondered what was going on at the Boulder monitor, whether it was working properly and how much of the ozone problem was natural. There is deeper snow up that way, he said. Still, the spikes in safe levels had caught everyone's attention in the Upper Green, even though they've been addressing ozone since 2005 or 2006. "I think, collectively, we thought we were on top of it, so to speak," Bousman said. "Now, I'm not so sure." ___ Information from: Casper (Wyo.) Star-Tribune, http://www.trib.com Claim: Wyoming ozone levels puzzle officials.
Example Output: Joel Bousman wasn't sure if ozone would be a problem Friday, despite a warning from the state. The snow covered the sage brush and the wind was less than 10 miles per hour both bad signs. On the other hand, it had been overcast most of the day at the Sublette County commissioner's ranch near Boulder a small community about 12 miles southeast of Pinedale, within view of the Wind River Mountains.

Example Input: Paragraph: After complaints about taste and costs, the Trump administration rolled back a rule that required foods like pasta and bread be made with whole grains. The cafeteria directors who lobbied for the change say they just want greater flexibility to serve foods like white bread which are more processed and have less fiber when whole grains don't work. In Vermont, the relaxed rule means white rice will be served with beans again. In Oregon, macaroni and cheese may return. And in South Dakota, students may notice a change with their soup. "The staff asked right away, 'Oh my God, can we go back to the other saltines?'" said Gay Anderson, a school lunch director and president of the School Nutrition Association, which represents cafeteria operators and suppliers like Domino's and Kellogg. The rollback addresses rules on grains, milk and salt championed by former first lady Michelle Obama. Since 2014, schools had been required to serve only whole grain versions of food as part of the national school lunch program, a critical source of free and reduced-price meals for millions of children. The idea is that whole grains would be more nourishing and help cultivate healthy habits amid alarming obesity rates . The Center for Science in the Public Interest, which is among the parties suing over the rollback, notes the standards were based on the government's own dietary guidelines and that most schools were successfully meeting them. But cafeteria operators said costs were higher, cooking was more difficult and students were throwing away more food. The School Nutrition Association said it's more important that children who rely on the lunches eat something, and that the rule ignored cultural preferences, such as for flour tortillas in the Southwest or for white rice among Asian students. To ease the transition to whole grains, the U.S. Department of Agriculture let schools apply for temporary waivers to serve select dishes that didn't meet the whole-grain rule. For the last school year, it said about 20 percent of districts asked permission to serve refined grains that are enriched to add back some nutrients. Among the frequently waived foods were pasta , pizza , tortillas and biscuits , which one Georgia lunch official joked affects the "tests scores of rednecks ," according to records obtained by The Associated Press from state agencies. Other waived foods included beignets, cinnamon rolls, corn dogs, sugar cookies and Pop Tarts. One district requested a waiver for croissants because it said students don't like the whole-grain version. "Plus they are 20 cents more per serving," the district said. Then in December, Agriculture Secretary Sonny Perdue said the USDA was going back to the old standard: At least half of grain foods must be rich in whole grains. The agency said that does away with the red tape of making schools get waivers, and gives schools more flexibility to offer wholesome meals that also reduce food waste. Whitney Ellersick, a school lunch director in Portland, Oregon, said the change means her district will no longer need a waiver for its lasagna. But she was surprised by the extent of the rollback. "I was a little shocked to see it go to 50 percent," Ellersick said. The Center for Science in the Public Interest said the USDA's rollback may be halting progress made by schools, which could be tempted to bring back more refined grains that cost less or are easier to make. Already, the group notes the USDA defines "whole grain rich" as being half whole grain, meaning there's built-in wiggle room to make bread and pasta students won't mind. Bettina Elias Siegel of The Lunch Tray website also noted a recent USDA report that found that "plate waste" was comparable before and after the rules were implemented in 2014, undermining arguments they were prompting students to throw away more food. The report also found that students took advantage of lunches more often in schools with healthier lunches. The American Heart Association likewise criticized the decision to relax the rules and called on school districts to stick to the previous standards, which also included stricter rules on salt and milk. Among the districts that plan to do so is Boston, where fifth grader Trinity Wilson likes the brown rice. She said it's is healthier than white rice. "I know that because my mom told me," Wilson said. But some school lunch officials say the rollback could help smaller districts that don't have access to as many products. In Arkansas, students in the Magnet Cove district accepted whole-grain Pop Tarts and other changes, officials say, but still prefer the old noodles, biscuits and rolls. "They're tastier, softer and fluffier," said Danny Thomas, the district's superintendent. In Burlington, Vermont, white rice and beans can return to menus. Doug Davis, the district's food director and incoming president of the School Nutrition Association, said it's a healthy dish that students will actually eat. To avoid buying two types of rice, Davis said white rice will likely also be used in stir fries and soups. He plans to stick mostly to whole grains, but he appreciates not having to. Whole-grain pasta isn't ideal for mac and cheese, Davis noted. "Would we make a change on that? I don't know," he said. ____ Follow Candice Choi at www.twitter.com/candicechoi ___ The Associated Press Health and Science Department receives support from the Howard Hughes Medical Institute's Department of Science Education. The AP is solely responsible for all content. Claim: With Trump rollback, school lunch could get more white bread.
Example Output: Is white bread about to make a comeback on school lunch menus?

Example Input: Paragraph: A man leaves the polling booth during the second-round of parliamentary election in Budapest April 25, 2010. REUTERS/Karoly Arvai A study of nearly 300 people in Pittsburgh who kept track of how much they walked each week showed that those who walked at least six miles had less age-related brain shrinkage than people who walked less. "Brain size shrinks in late adulthood, which can cause memory problems. Our results should encourage well-designed trials of physical exercise in older adults as a promising approach for preventing dementia and Alzheimer's disease," said Kirk Erickson of the University of Pittsburgh, whose study appears in the journal Neurology. Alzheimer's disease, the most common form of dementia, slowly kills off brain cells, and activities like walking have been shown to build brain volume. Erickson and colleagues tested to see if people who walk a lot might be better positioned to fight off the disease. They studied 299 volunteers who were free of dementia and who kept track of how much they walked. Nine years later, scientists took brain scans to measure their brain volume. After four more years, they tested to see if anyone in the study had cognitive impairment or dementia. They found that people who walked roughly six to nine miles a week halved their risk of developing memory problems. "Our results are in line with data that aerobic activity induces a host of cellular cascades that could conceivably increase gray matter volume," the team wrote. They said more studies need to be done on the effects of exercise on dementia, but in the absence of any effective treatments for Alzheimer's, walking may be one thing people can do that may help down the road. "If regular exercise in midlife could improve brain health and improve thinking and memory in later life, it would be one more reason to make regular exercise in people of all ages a public health imperative," Erickson said. No current drugs can alter the progression of Alzheimer's, which affects more than 26 million people globally. Claim: Walking may keep brain from shrinking in old age.
Example Output:
Walking at least six miles a week may be one thing people can do to keep their brains from shrinking and fight off dementia, U.S. researchers said on Wednesday.