user: Teacher: Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.
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By Marianna SpringSpecialist disinformation reporter, BBC News The adverts show the Democratic Party challenger with an earpiece, and say that he refused to have his ears checked for devices prior to the debate. The Biden campaign rejected the claims. The Trump campaign adverts ask: "Why won't Sleepy Joe commit to an ear test?" and "Who is in Joe's ear?" Accusations that presidential candidates have received debate help via hidden hearing devices are familiar, albeit unproven. Such allegations have been levelled against both Republican and Democratic candidates in the past. Prior to Tuesday's debate, the rumour about Mr Biden's supposed earpiece was circulating on several social networks, and was being promoted by the Trump campaign. At least 15 versions The advertising campaign was launched after the debate, and also promotes two other baseless but widely shared rumours about Mr Biden. One suggested he asked for breaks during the debate, and another accused him of refusing a "drug test". The photo featured in the advert is not from Tuesday's debate. It was first shared online in September 2019. In a number of the adverts, it has been doctored to show Mr Biden wearing wireless Apple headphones. This was not the case in the original image. Some versions circle the ear featuring the headphone. By Wednesday evening, there were at least 15 different versions of the advert, and according to Facebook's Ad Library, they had reached at least 10 million users. Facebook has pledged to label posts containing voting misinformation and point users towards accurate information ahead of the election. However its policy does not involve fact-checking political speech, including in advertisements. The company declined to comment about the latest Trump ad campaign. Rumour origins Hours before the debate, the claims went viral on Facebook and YouTube. Identical memes were pushed by a number of popular Facebook pages with names such as US Conservative and Unhinged Left. They claimed "Joe Biden should be inspected for a hidden earpiece as well as submit to a drug test before the debate". These memes are subject to fact-checks - and some have had warning labels applied to them on Facebook. The claims were picked up by Fox News and other conservative news outlets. They were further amplified by supporters of QAnon, an unfounded a conspiracy theory that claims President Trump is fighting a secret war against elite Satan-worshipping paedophiles. Those who believe in QAnon are known for promoting political disinformation on social media which targets opponents of the president. They shared close-up pictures of Mr Biden's ears, alleging a listening device was visible. During the debate, some also shared photos of a fold in Mr Biden's shirt, claiming it was caused by a wire, and of a supposed device on his wrist, where he wears a rosary in memory of his late son Beau. Nothing new Conspiracy theories about secret listening devices have been recycled in presidential election campaigns for the past two decades. Democratic candidate Hillary Clinton faced similar unfounded claims ahead of the 2016 presidential election. In 2004, rumours circulated among left-wing sites and blogs that President George W Bush was being aided by a secret earpiece. None of those allegations were found to be true. Even if a candidate did wear an earpiece, any advantage would be questionable. As TV and radio presenters can attest, listening to someone while simultaneously talking during the back-and-forth of a live event is a difficult skill to master.
Solution: US President Donald Trump's re-election campaign is running hundreds of Facebook advertisements pushing an unfounded conspiracy theory that Joe Biden cheated during the first US presidential debate.
Reason: This is a relevant summary for the given paragraph. It also contains explicit phrases from the given text

Now, solve this instance: By James GallagherHealth and science reporter, BBC News It is thought 700,000 people in the UK have chronic migraine. Final draft guidelines by the National Institute for Health and Clinical Excellence (NICE) recommend Botox when other drugs have failed. The Migraine Trust said it welcomed the decision. Migraines are extreme headaches that often come with nausea and being very sensitive to light or sound. To have chronic migraines, a patient must have headaches on at least 15 days a month, eight of which have to be migraines. NHS funding? Botox was approved as a treatment for chronic migraine in the UK in 2010, and NICE is now considering whether the NHS should fund it. In February, it said there was insufficient evidence and asked the manufacturer, Allergan, to provide more proof. Now it believes that Botox should be used in some patients. Prof Carole Longson, the director of the health technology evaluation centre at NICE, said: "Chronic migraines are extremely debilitating and can significantly affect a person's quality of life. "We are pleased that the committee has been able to recommend Botox as a preventative therapy for those adults whose headaches have not improved despite trying at least three other medications and whose headaches are not caused by medication overuse." The final guidelines are expected in June. NICE estimated the cost to the NHS would be £349.40 for every 12-week cycle of treatment. 'Safe and effective' Exactly how the neurotoxin prevents migraines is unknown. It may work by blocking pain signals or relaxing muscles. Wendy Thomas, the chief executive of The Migraine Trust, welcomed the recommendation by NICE. She said: "Chronic migraine is a disabling condition and in many cases ruins people's lives. "For patients who suffer from this condition, Botox may offer a safe and effective preventative treatment option to help them manage their migraine and improve their quality of life." Dr Fayyaz Ahmed, chair of British Association for the Study of Headache, said: "The headache experts with first-hand experience in treating chronic migraine know how debilitating the condition can be for some patients, and Botox can be a life changing treatment. "We are pleased that NICE has recommended Botox for those who have failed to respond to first-line treatments."
Student:

assistant: The anti-wrinkle drug Botox could soon be offered to patients with chronic migraines by the NHS in England and Wales, according to the medicines watchdog.