Given a paragraph, generate a claim that is supported by the given paragraph. 1) The claim must contain information from within the paragraph. 2) A sentence within the paragraph can be used as a claim. 3) The claim should not have contradictions within the paragraph. 4) The claim should be at most one sentence long.

Ex Input:
The latest work, which appears in the journal PNAS, Proceedings of the National Academy of Sciences of the United States of America, also suggests that different policy steps might be needed in that case. "My study essentially shows that the methods used and analyses presented in the original research are insufficient to rule out other explanations (for lower IQ)," said Ole Rogeberg, an economist at the Frisch Centre for Economics Research in Oslo, to Reuters. The Dunedin Multi-disciplinary Health and Development Study is an ongoing report produced by New Zealand's University of Otago, monitoring 1,037 New Zealand children born between April 1972 and March 1973. The study followed them for 40 years. The participants were periodically tested for IQ and other indices including drug taking, and in 2012 clinical psychologist Madeline Meier produced a study saying there was a link between teenage cannabis use and a lower IQ. Researchers in the Meier study compared the IQ trends of people who never smoked cannabis with four groups of those who did: people who smoked, people who scored as dependent in a follow-up survey, those who scored as dependent twice and those who scored as dependent three times. The study found IQ declines increasing "linearly" with cannabis use, Rogeberg wrote in PNAS. The crucial assumption in the Meier study is that cannabis use is the only relevant difference between the groups tested, he said. His use of a simulation model showed that it may be premature to draw a causal inference between marijuana use and falling IQ scores. For one thing, other writing about the Dunedin group on which Meier's study is based suggest that early cannabis use is more common for people with poor self-control, previous conduct problems, and high scores on risk factors linked to low family socioeconomic status, he wrote. Given these factors, young people from lower status families tended to end up in less intellectually demanding environments, whether by choice or by circumstance, which would increase the difference in IQ levels as they aged. "We know that the researchers have measured the IQ of the participants at various ages in childhood - but we don't know if the IQ changes were similar for the different cannabis-using groups before their cannabis use," he told Reuters. "We don't know how much of the change in IQ we can explain by differences in education, jail time, occupational status, etc and whether this affects the estimates in the paper."

Ex Output:
Study casts doubt on link between cannabis, teen IQ drop.

Ex Input:
Bottles of Corona beer speed past a worker in the bottling line of Mexico City's Modelo brewery, May 19, 2004. REUTERS/Andrew Winning He may be in for worse than a surprise: a nasty skin reaction that one doctor is calling "Mexican beer dermatitis." A substance in lime juice, if left on the skin in the sun, can cause the skin to become discolored, as if by poison ivy or a jellyfish sting and the marks can last for months, reports Scott Flugman in the Archives of Dermatology. Mexican beers, particularly Corona, are typically served with a lime slice wedged in the top of the bottle. The drinker shoves the lime into the bottle and holds his or her thumb over the bottle's mouth while turning the bottle over to mix in the juice. But if the drinker is not careful, the beer's carbonation can spray lime juice and beer all over his or her skin "especially in a patient who is shirtless by a beach or pool," wrote Flugman, a dermatologist in New York. The resulting reaction is due to a substance called psoralen, used to make the skin more sensitive to a wavelength of ultraviolet light, UV-A, used to treat certain skin conditions. Lemons contain psoralens too, but not as strong. "It's just a cosmetic issue," Flugman told Reuters Health, though he said the discoloration most frequently in people like bartenders who work outdoors with limes may take an emotional toll. "People are worried that it's something serious. You might have some brown spots you're been looking at for a few months," he said. Olive-skinned Caucasians may be especially susceptible. No ties have been shown between the reaction and skin cancer, said Flugman, who added that he sees two or three cases a year. They are often mystified why a dermatologist is asking them if they've recently drunk Mexican beer. His advice? "If you do this and you spritz the beer or the lime, just wash it off. Don't leave it on there and sit out in the sun," he said. Or, if you are disinclined to get up for a while, "throw a towel over it."

Ex Output:
Hold the lime with Corona, may cause skin reaction.

Ex Input:
In a declaration issued after a meeting in the Bosnian capital Sarajevo, they urged Balkan governments to halt any further construction of hydro dams. "We want everybody to see that it is bad, and it is wrong and that we are devastating our natural beauties," said Irma Popovic Dujmovic, from World Wide Fund for Nature Adria group, one of the organizers of the Sarajevo gathering. Concerns have been raised that small plants are being built for profit without any regard for the local community and local eco-systems. "Nature is losing, and local people are losing," Dujmovic said. In Bosnia alone, participants at the meeting said there are plans to build 300 dams on 244 rivers. In the region, some 2,700 hydropower plants are envisaged in the coming years. Also Thursday, EuroNatur and Riverwatch groups said in a report that small hydro power plants are putting "immense pressure" on rivers throughout Europe. In addition to the 21,387 existing hydropower plants, another 8,779 are planned, mainly in the Alps and the Balkans. According to the report, this proliferation could destroy previously untouched rivers especially in the Balkans. Anger over crystal clear rivers being turned into building sites has fueled citizens' movements throughout the Balkans. Residents of small villages have held protests and sought to bring the work to a halt. In the central Bosnian village of Merdani, residents said a small hydro plant under construction on the river Lasva has led to problems with water supplies and damaged roads. "It was a peaceful river before," said villager Mehrudin Halilovic. "I am totally against the building of this plant." Countries in the Balkans are lagging the rest of Europe in environmental standards. Many rivers in the area also are heavily polluted with waste from factories or clogged with garbage washed away from the riverbanks. Martin Skalsky, from the Czech Republic's ARNIKA group, said in Sarajevo that it is important to preserve the Balkan nature because there are not many other regions in Europe so untouched and unpopulated. "If you will build hundreds or thousands of small hydropower plants on your rivers, you can just lose everything in very few years," he said. "So, it's really dangerous."

Ex Output:
Activists warn Balkan rivers at risk from hydropower plants.