TASK DEFINITION: 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.
PROBLEM: Paragraph: Interior minister Sajid Javid used an exceptional power on Saturday to release medicinal cannabis oil that had been taken from Billy Caldwell, 12, by customs officials at London's Heathrow Airport. Billy's mother, Charlotte Caldwell, had been pleading for the medication to be given back because without it her son suffered from life-threatening seizures. "This case .. has shone a light on the use of cannabis medicine in this country and highlighted the need for the government to explore the issue further, and our handling of these issues further," said Nick Hurd, a junior minister in charge of policing. "As a first step, I can announce today that the government is establishing an expert panel of clinicians to advise ministers on any individual applications to prescribe cannabis-based medicines," he told parliament. Under British law, cannabis is listed as a schedule 1 drug, meaning that it is not recognized as having a therapeutic value. Schedule 1 drugs can be used for research purposes and clinical trials but only under a Home Office license. "I recognize the need to ensure that the approach to licensing works more effectively," Hurd said. Billy Caldwell had been receiving medicinal cannabis oil on prescription by his family doctor for more than a year, but supplies ran out after the interior ministry ordered the doctor to stop prescribing it. Charlotte Caldwell and her son, who normally live in Northern Ireland, made a round trip to Canada to buy more supplies, but the oil was confiscated by customs when they re-entered Britain. Billy was hospitalized days later, suffering from seizures. His condition improved after the medicinal cannabis oil was handed back and on Monday he was discharged from hospital. Several members of parliament from different parties voiced support for the Caldwell family and to the idea of loosening the rules on therapeutic uses of cannabis in responses to Hurd's statement on Monday. Claim: UK signals changes on medicinal cannabis use after epileptic boy's case.

SOLUTION: The British government will look into possible changes to rules on the use of cannabis-based medicines, a minister said on Monday, after an epileptic boy whose medication was confiscated was hospitalized.

PROBLEM: Paragraph: We'll give the story a "N/A" in this category since it makes clear early on that this research is in the earliest of stages, done in an animal model, and says clearly that clinical trials are a future hope. This is way too early to consider costs which, we assume, would be substantial. The story says the stem cell intervention extended the rodents' lives "by 10-15% compared to untreated animals." At another point, it said, "the mice lived longer than controls, typically several months more, an increase of about 15%." The story makes no mention of the potential harms that might arise from this approach. Since this has never been tested in humans, we have no idea what they risks are. The story needed to point this out. Theoretically, the stem cells would have to be delivered into human brains via injections, which would make the intervention incredibly risky and possibly a non-starter. In the original paper, the stem cells were injected into the hypothalamus of the mice using viruses as "vectors." The researchers used lentiviruses, which are used often as vectors for research, but can be deadly in humans. Some discussion of this hurdle also was warranted. The story does a good job at explaining various aspects of the research and depicting the stages through which the research team drew its conclusions. It also is up front about this being animal research, so far untried in humans at even the earliest stages of clinical trials. Of note, the original paper mentions that this study was conducted in very few mice (total of about 20) and only in male mice. That detail would have been useful to include. One thing we wanted to point out that was problematic: The story said "if a similar extension was achieved in humans, a person with a life expectancy of 80 years could live to 92." We have no idea how this may impact humans; the evidence doesn't support that kind of speculation. The story doesn't appear to commit disease mongering, though it could have pointed out that aging in and of itself is not a disease. The story does quote one source unaffiliated with the research and we didn't detect any conflicts of interest. (The paper itself notes that the authors of the study have no conflicts of interests.) The story is all about basic research that suggests an approach that one day might slow, or possibly reverse, the aging process. There are no real alternatives available now to affect the aging process beyond lifestyle choices that might be healthier and appropriate treatments for illnesses that might otherwise shorten lifespans. It's clear from the story that this research is preliminary. The story clearly says, "The next step is to create human neural stem cells in the lab for testing." It also states that, "Researchers at Albert Einstein College of Medicine in New York hope to launch clinical trials of the procedure soon, but must first produce supplies of human neural stem cells in the lab which can be implanted into volunteers." The story heralds this research as a "tour de force" and a "breakthrough." Yet is it accurate in a news story to call anything done in animals a "breakthrough?" That word implies relevance to humans, and this is far from established in a mouse study. Studies in mice are essential but many of them fail to show similar evidence in humans. Likewise, stem cell research is often seen as a magic bullet for some conditions but there have been few cases where the preliminary hope/hype has born out. The story does not appear to rely on a news release. Claim: Stem cell brain implants could 'slow ageing and extend life', study shows

SOLUTION: This story describes some interesting but very early research into the mechanisms of aging and how they might be altered. The story made it clear that this was mouse-level research and has several hurdles to go before it's ever tested in people. One weak point for the story was how the story assumed there might be benefits in people yet overlooked the potential risks. Considering this intervention involves inserting stem cells into the brain via the assistance of a viral strain known to be harmful to humans, it's logical to assume there could be some safety concerns. It also overplayed the novelty here by quoting an expert who called it a "tour de force" and a "breakthrough." The desire to somehow combat aging seems inherent in humans. If there is a fairly straightforward "switch" that can control the aging process and this story suggests so then this would be a major advance. Yet we are looking at decades before this becomes a rigorous Phase III human trial, let alone a potential intervention in humans. The bottom line is: We are talking about approximately 20 male mice.

PROBLEM: Paragraph: No longer. More than half of the cane in Brazil's main sugar-producing area of Sao Paulo state was harvested using machines during the 2009/10 season, a historic first that portends greater efficiency in coming years. The shift is occurring so quickly that some producers face a four-month waiting list to get the right equipment. The transition, driven by both increased competition and tougher Brazilian environmental laws, has been a boon for multinational equipment manufacturers supplying the world's leading producer of sugar and the second largest ethanol producer after the United States. "Brazil's market is hot," said Jose Emilio dos Santos, manager of Tratorag Comercio e Representacao, a John Deere dealer based in Piracicaba, the heart of the center-south's cane growing region in Sao Paulo state. "Many producers are looking to buy a new machine harvester." Last year, Cosan, the world's largest sugar and ethanol producer, spent 30.5 million reais ($17.3 million) on mechanization and expects to train between 180 and 200 harvester operators per year for the next four years, said Luis Carlos Veguin, the company's human resources director. Adoption of the technology by big firms has forced many smaller producers to follow suit. In the first six months of 2010, 3,186 harvesters of all types were sold in Brazil, up from 478 in the same period of 2006, according to figures from Anfavea, the vehicle manufacturer's association. It's not just companies that are benefiting from the switch. Izaura Freitas Souza, 39, has wielded a machete in the sugar cane harvest since she was a 15 year old and once almost sliced off her big toe in the fields. Today, Souza drives a harvester for Cosan in Piracicaba and says she has tripled her earnings to 1,800 reais a month, which allows her to save to buy a house. "It is clean work now," she said, "without the physical wear and tear." Initial investment in a harvester is expensive but over time is a cheaper alternative to manual labor because wages have been rising in tandem with Brazil's economy, Veguin said. A new cane harvester from John Deere costs an average 880,000 reais, said dos Santos, the tractor dealer. The company's main competitor in Brazil is Case IH, a subsidiary of CNH Global. For smaller sugar cane producers who are unable to afford the initial investment, the situation can be dire. Unable to compete with the efficiency of the bigger players, some have been forced to enter into partnerships with Cosan or Bunge, or logistics companies, like Julio Simoes. "Banks request guarantees and the cost of a harvester is quite high," dos Santos said. "Not all producers can provide sufficient collateral." Mechanization is given urgency by environmental laws, which will effectively phase out manual cane cutting in Sao Paulo state by 2017. Before manual harvesting begins, workers set fields alight to clear the undergrowth and flush out snakes and insects. Reducing burning is a priority for producers because the method is a blot on otherwise impressive environmental credentials Brazilian ethanol from cane is about six times more energy efficient than its U.S. corn-derived counterpart and they have introduced more stringent schedules. "We have a 100 percent target for the elimination of burning (in areas suitable for mechanization in Sao Paulo state) for 2014," said Antonio de Padua Rodrigues, a director at Unica, the cane industry association. Cane producers fear that environmental reasons might be used as de facto trade barriers to prevent the entry of Brazilian sugar and ethanol into less competitive domestic markets in Europe and North America. This will be important as Brazil seeks to expand in overseas markets. The country's 2010/11 sugar cane crop will be the ninth record in a row, up 10 percent from the prior year, according to the government's supply agency, Conab. But the worst hit by mechanization are the cane cutters, many of whom risk losing their jobs if they can't retrain. A harvester replaces about 100 cane cutters a day, according to Unica, and creates 30 jobs by way of operators and maintenance teams. An operator trainee must be literate and hold a driving license, which excludes many cutters. Although government and producers have stressed retraining, figures from Unica show there were 140,000 manual cane cutters in Sao Paulo state in 2010, down from 190,000 in 2006. Even Souza, the harvester operator, misses the company in the fields. "During the breaks everyone would joke around," she said. "In the harvester I can only laugh at the memories." (Editing by Brian Winter and Kieran Murray) Claim: From machete to machine in Brazil's cane fields.

SOLUTION:
For nearly five centuries, the classic image of sugar production in Brazil has been one of workers setting cane fields on fire and then descending on the crop with their machetes for harvest.