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.

Input: Consider Input: Paragraph: The airline had earlier said only cabin crew operating mainland China flights could wear masks, in response to the airline’s flight attendants calling for permission to wear masks on all flights globally as cases have also been confirmed in the United States, Thailand, South Korea, Japan and Taiwan. “Due to the evolving information from health authorities, we will allow crew members and frontline airport employees to wear surgical face masks when on duty at their discretion,” Cathay said in a statement. The coronavirus outbreak, which began in the central Chinese city of Wuhan, struck as millions of Chinese prepared to travel for the Lunar New Year, heightening contagion risks. Wuhan’s local government said it would close all urban transport networks and suspend outgoing flights from the city as of 10 a.m. on Thursday (0200 GMT), state media reported, adding that the government said citizens should not leave the city unless there were special circumstances. The Cathay Pacific Airways Flight Attendants Union said on Tuesday it had received a “tremendous” amount of emails and messages from members concerned over catching the virus given they are exposed to over 300 passengers from numerous places on a single flight. On Wednesday evening, Cathay said on its website that rebooking, rerouting and refund charges would be waived for all tickets booked on or before Jan. 21, arriving to or departing from Wuhan through March 31, an extension from the Feb. 15 date listed the prior evening. Deaths from China’s new flu-like virus rose to 17 on Wednesday, with more than 540 cases confirmed. The virus has already spread beyond Wuhan to population centers including Beijing, Shanghai, Macau and Hong Kong. Cathay said that as required by the Hong Kong health authorities, it was distributing health declaration forms and will be making face masks and antiseptic wipes available at the boarding gate to passengers traveling from Wuhan to Hong Kong. “Our frontline staff are reminded to maintain good personal and environmental hygiene, and to remain alert and vigilant while being on the lookout for passengers presenting with infectious disease symptoms,” the airline said. Cathay has already been hit by plummeting demand as a result of anti-government protests in Hong Kong, leading it to cut capacity and defer the delivery of four planes. Shares in Cathay have fallen by 10% since the start of January as the virus spread. Jefferies analysts said shares in Cathay and mainland Chinese carriers could remain under pressure for some time if the coronavirus situation paralleled the 2003 SARS outbreak and cases continued to increase. That coronavirus outbreak killed nearly 800 people. Claim: Cathay to let crew wear masks on all flights due to new coronavirus.

Output: Hong Kong’s Cathay Pacific Airways Ltd (0293.HK) will allow all crew members and frontline employees to wear surgical masks due to concerns over a new coronavirus, and said passengers to and from Wuhan, China, could change or cancel flights for free through March 31.


Input: Consider Input: Paragraph: Most people know roughly what a bottle of vitamin D supplements might cost them, so the lack of information on cost is not a significant gap. We appreciate that the story provided data showing the large and growing amount our society is spending on vitamin D supplements ($430 million in 2009), with apparently little health benefit to show for it. The story was mostly concerned with discussing the lack of benefit from taking extra vitamin D and calcium. And in this area it excels. While the story does lack precision when it suggests that adolescent girls should be getting more calcium (it never specifies how much they are getting now, how much more they’d need to meet the recommendations, or what benefits they might expect from this increased intake), it would be difficult for a journalist to come up with any sort of quantifiable benefit or harm estimate from the IOM report. The story captured the overall gist of the problem, which is that the evidence base is complex and still inadequate. The story notes that, contrary to the claims of many advocates for increased supplemental vitamin D, there is evidence that high levels of vitamin D may have adverse effects, such as increased risk for fractures and an increase in the overall death rate. The story also explained that too much calcium has been linked to increased risk of kidney stones and, more tentatively, heart disease. The story did a good job of describing how the expert committee conducted its review and what evidence they found. Importantly, it noted that  claims of benefit from extra vitamin D are based on observational studies that most scientists agree “cannot determine cause and effect.” We also like that the story solicited opinions from a variety of experts with no obvious stake in the controversy. This produced a number of quotes that emphasized the need for restraint when interpreting the research on vitamin D. Examples: “I think this report will make people more cautious” and “The onus is on the people who propose extra calcium and vitamin D to show it is safe before they push it on people.” Although we agree with the story’s skeptical overall message, we think it may have slammed the door just a bit too hard on the possibility of benefit from supplemental vitamin D. While claims of benefit may not be supported by the currently available evidence, they have not been conclusively disproved in randomized controlled studies, either. In fact, research is now underway to determine whether the benefits found in observational studies of vitamin D can be replicated in more rigorously designed trials. The story probably should have mentioned this research, and left the door to potential benefits open just a crack. No disease-mongering here. The diversity of independent voices included in this story is a real strength. Although it solicits the obligatory comment from a supplement industry spokesman, it didn’t go out of its way to find any of the more widely known vitamin D experts, some of whom have been issuing recommendations that are untenable based on current evidence. The enthusiasm of some of these researchers might be explained by their significant career and financial interests in promoting vitamin D. Not applicable for this story. The approaches discussed are not new, and there’s not really any alternative to getting adequate amounts of these essential nutrients. The availability of vitamin D from diet, sunlight and supplements is clear from the story. The novelty of vitamin D and calcium is not really in question, so we’ll call this not applicable. This story was not based on a news release. Claim: Report Questions Need for 2 Diet Supplements

Output: In one particularly effective passage, the story quoted a representative of a supplement industry group who disagreed with the report, saying that higher levels of vitamin D could be beneficial. But it then segued immediately into an explanation of why claims from supplementation advocates “are not supported by the available evidence.” The key problem, as the story points out, is that these claims are based almost exclusively on observational studies that can’t prove cause and effect and are often skewed by factors the researchers haven’t accounted for. Proponents of supplementation also have tended to downplay the possibility that higher doses of vitamin D and calcium might cause harm–a stance which the story notes may not be justified. We applaud this story’s effort to show readers where the weight of the evidence lies on this issue. Vitamin D is the latest in a long line of “miracle” nutrients that people have turned to in the hope of improving their health. As we’ve learned from copious previous experience, these supplements rarely work as advertised and can sometimes cause harm at the higher doses people often think will be beneficial for them. More isn’t necessarily better when it comes to vitamin D–or most other health care interventions for that matter.


Input: Consider Input: Paragraph: Two people who had travelled from Congo died in Uganda last week, the World Health Organization said. A three-year-old boy who was sent back to Congo after testing positive for the disease died at the weekend, Congo’s health ministry said. At least another 1,411 people have died in Congo since August in the second worst outbreak of the disease on record. “Happy to inform you all that we got clearance from both Uganda National Council for Science and Technology and National Drug Authority to bring in the Therapeutic treatment for #Ebola patients in the country,” Uganda’s Health Minister, Jane Ruth Aceng, said on Twitter. The treatments approved for shipment to Uganda were Mapp Biopharmaceutical’s ZMapp, Regeneron Pharmaceuticals Inc’s REGN-EB3 and Remdesivir, made by Gilead Sciences, said WHO spokesman Tarik Jasarevic. “The protocols for the fourth being submitted. Logistics underway with MSF support for importation of a few courses about 10 each,” he added in an email. The U.N. health agency has said there have so far been no known cases of Ebola spreading between people in Uganda - all recorded patients had travelled in from Congo. Four experimental therapeutic treatments are already being used in Congo, it added. On Friday, a WHO panel decided not to declare an international emergency over Congo’s Ebola outbreak despite its spread to Uganda, saying such a declaration could cause too much economic harm. “Obviously, the crisis is far from over,” Mark Green, the head of the U.S. Agency for International Development (USAID), told a news conference in Nairobi. Health workers and people who came in contact with infected people began receiving a Merck experimental vaccine in Uganda on Saturday. (This story corrects name of drug in 5th paragraph to REGN-EB3, not Regeneron). Claim: Uganda clears three experimental Ebola treatments, watches for spread.


Output: Health workers have got the all-clear to use three experimental Ebola treatments in Uganda, a week after the deadly disease spread over the border from Democratic Republic of Congo, authorities said on Tuesday.