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.

[EX Q]: Paragraph: "Of more than 300 men and women who had the surgery, a third stopped playing sports entirely and 68 who were still active said they didn’t play as well as before, researchers reported in the American Journal of Sports Medicine. The anterior cruciate ligament, or ACL, is the ligament inside the knee that helps keep the joint stable. About 150,000 ACL injuries occur each year in the United States. “Less than 50 percent of the study sample had returned to playing sport at their preinjury level or returned to participating in competitive sport when surveyed at 2 to 7 years after ACL reconstruction surgery,” wrote Clare Ardern at La Trobe University in Victoria, Australia, who led the study. Ardern and her colleagues followed more than 300 men and women for two to seven years. Participants had either played Australian-rules football, basketball, netball or soccer before their surgeries. At 39 months post-surgery, 208 out of the 314 people who had the operation were still playing a sport, the researchers said. Of those 208, 68 said they played at a lower level than before their injury and 140 said they played about the same as before their injury. The remaining 106 participants either were not playing sports or did not complete the entire study. “Although almost all people returned to playing some form of sport, they did not play continuously for many years after their surgery,” Ardern told Reuters Health in an email. She also noted there may be other reasons why people stopped playing sports, such as fear of getting injured again or less confidence in performing. Of the 196 people who played competitive sports before their injury, 91 returned to their competitive sport. “This is a big injury,” said Edward McDevitt, a spokesman for the American Academy of Orthopaedic Surgeons, who was not part of the study. “Many athletes who choose surgery have a long and difficult road to face. If you’re not willing to go through it, then you might be better off just getting a brace.”   He added that while knee surgery does allow people to return to their sport, they couldn’t perform as well as doctors might wish. People who tear the ACL can either opt for physical therapy and surgery or just physical therapy alone. “Some people find that they are able to function well without surgery, provided they have adequate leg strength to support the injured knee,” Ardern said. “Other alternatives may be to avoid sports involving direction changes, jumping and landing or activities that make the knee feel unstable, or use knee braces and supports.”   McDevitt speculates that after surgery, some athletes may not have the same range of motion, preventing them from playing as before. ""I tell my patients, 'I can't make you like before, I'm not God. But I'll do the best I can to restore you back to the way you were,'"" he added. SOURCE: bit.ly/pWId18" Claim: After knee repair, half can't play sports the same.
[EX A]: After knee reconstruction surgery, half of people who played sports both competitively and just for fun don’t perform as well as they used to, according to an Australian study.

[EX Q]: Paragraph: Rwanda briefly closed its border with Congo over the virus outbreak in the city of more than 2 million as the painstaking work of finding, tracking and vaccinating people who had contact with the man — and the contacts of those contacts — began. The man died on Wednesday after spending several days at home with his large family while showing symptoms. Congo’s presidency said the entire family was at “high risk” and in quarantine. The Ebola coordinator for North Kivu province, Dr. Aruna Abedi, confirmed the wife’s case to The Associated Press hours after that of the child. “We’re seeing the first active transmission chain in Goma and expect more to come,” the International Rescue Committee’s Ebola response director, Andre Heller, warned in a statement. This outbreak has killed more than 1,800 people, nearly a third of them children. It is now the second-deadliest Ebola outbreak in history, and last month the World Health Organization declared it a rare global emergency. Rwanda’s state minister for foreign affairs, Olivier Nduhungirehe, confirmed the border closure, a day after WHO officials praised African nations for keeping their borders open. Last week Saudi Arabia stopped issuing visas to people from Congo, citing the Ebola outbreak, shortly before the annual hajj pilgrimage there this month. Congo’s presidency condemned Rwanda’s decision, and Congolese at the busy frontier expressed frustration. “I can’t understand why they don’t just test us instead of closing these borders,” said Angel Murhula, who works in Rwanda. Several hours later Congo’s presidency said the border had reopened. A Rwanda health ministry statement called the events a “traffic slowdown” as surveillance for Ebola was reinforced. The ministry advised against unnecessary travel to the Goma area. WHO has recommended against travel restrictions amid the outbreak but says the risk of regional spread is “very high.” Any border closure is likely to push people to avoid official crossings equipped with hand-washing stations and where people are checked for signs of fever or other Ebola symptoms. In June, three people who crossed on an unguarded footpath into Uganda died there before their family members were taken back to Congo for treatment. The death Wednesday in Goma “in such a dense population center underscores the very real risk of further disease transmission, perhaps beyond the country’s borders,” United Nations agencies said in a joint statement marking a year of the outbreak. The man in his 40s was a miner returning from an area of northeastern Ituri province, Mongwalu, where no Ebola cases in this outbreak have been recorded, WHO said. He was exposed to the virus along the roughly 300-mile-long (490-kilometer) route from the city of Komanda to Goma as he took motor taxis over a number of days through the densely populated region at the heart of the outbreak. The man arrived in Goma on July 13 and started showing symptoms on July 22. He was isolated at an Ebola treatment center on Tuesday. He had spent five days being treated at home before going to a health facility, where Ebola was suspected. Symptoms can start to occur between two and 21 days from infection, health experts say. “He may not even have been aware of the exposure that he had,” WHO emergencies chief Dr. Michael Ryan said Wednesday. Symptoms such as fever can be confused with malaria, which is endemic in the region. Congo’s new Ebola response coordinator, Jean-Jacques Muyembe, has said there appears to be no link between the case and a previous one in Goma announced two and a half weeks ago. That case was a 46-year-old preacher who managed to pass through three health checkpoints on the way from Butembo, one of the communities hardest hit by this outbreak. The declaration of a global health emergency — the fifth in history —came days after that first Goma case. It has brought a surge of millions of dollars in new pledges by international donors, but some health workers say a new approach is needed to combat misunderstandings in a part of Congo that had never experienced Ebola before. Health workers responding to the outbreak have been attacked, even killed, in a region where rebel groups are active and the population is wary of outsiders. There is no licensed treatment for Ebola, which is spread by close contact with bodily fluids of those infected, and survival can depend on seeking treatment as quickly as possible. And yet many people in the region don’t believe that the virus is real, health workers have said. This outbreak is second only to the 2014-16 Ebola outbreak in West Africa that left more than 11,300 people dead. ___ Ssuuna reported from Kigali, Rwanda. Associated Press writer Al-Hadji Kudra Maliro contributed. ___ Follow Africa news at https://twitter.com/AP_Africa Claim: 1-year-old daughter, wife of Congo’s Goma victim have Ebola.
[EX A]: The wife and 1-year-old daughter of the man who died of Ebola in Goma this week have tested positive for the disease, health officials confirmed Thursday, the first transmission of the virus inside the densely populated crossroads city on the border with Rwanda, a scenario that health experts have long feared.

[EX Q]: Paragraph: Pollution composed of tiny particles from car exhaust, factory smokestacks and other sources is dangerous to everyone’s health, and during pregnancy it’s been linked to premature births and low birth weight. But scientists don’t understand why, something that could affect care for women in highly polluted areas. One theory is that the particles lodge in mom’s lungs and trigger potentially harmful inflammation. Tuesday, Belgian researchers reported another possibility, that any risk might be more direct. A novel scanning technique spotted a type of particle pollution — sootlike black carbon — on placentas donated by 28 new mothers, they reported in Nature Communications. The placenta nourishes a developing fetus and tries to block damaging substances in the mother’s bloodstream. The Hasselt University team found the particles accumulated on the side of the placenta closest to the fetus, near where the umbilical cord emerges. That’s not proof the soot actually crossed the placenta to reach the fetus — or that it’s responsible for any ill effects, cautioned Dr. Yoel Sadovsky of the University of Pittsburgh Medical Center, a leading placenta expert who wasn’t involved with the new research. And it’s a small study. Still, “just finding it at the placenta is important,” Sadovsky said. “The next question would be how much of these black carbon particles need to be there to cause damage.” Scientists already had some clues from animal studies that particles could reach the placenta, but Tuesday’s study is a first with human placentas. The Belgian researchers developed a way to scan placenta samples using ultra-short pulses from a laser that made the black carbon particles flash a bright white light, so they could be measured. The researchers included placentas from 10 mothers who lived in areas with high pollution and 10 others from low areas. The higher the exposure to pollution, the more particles the researchers counted in the placentas. “As the fetal organs are under full development, this might have some health risks,” said Hasselt environment and public health specialist Tim Nawrot, the study’s senior author. He is doing additional research to try to tell. ___ 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: Study finds air pollution reaches placenta during pregnancy.
[EX A]:
A new study suggests when a pregnant woman breathes in air pollution, it can travel beyond her lungs to the placenta that guards her fetus.