Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

[EX Q]: BBC News understands that the star phoned BBC head of television, Danny Cohen, to report the incident. Producer Oisin Tymon, with whom the altercation took place, is not believed to have filed his own complaint. Interviews are expected to be held with the star and other parties next week, and the show has been taken off-air. Clarkson has expressed regret over the incident, which his co-presenter James May labelled "a bit of a dust-up". An online petition calling for the star's reinstatement - set up by political blogger Guido Fawkes - has accrued more than 800,000 signatures since Tuesday. Speaking to reporters on Friday, Clarkson said he is "very grateful to everybody" who has signed the petition. Top Gear is one of the BBC's most popular and profitable TV shows, with an estimated global audience of 350 million. Its success is largely attributed to the contentious host, who has appeared on the show since 1988. Politicians on all sides have weighed into the affair, with Prime Minister David Cameron - a friend of Clarkson - saying he hoped the incident could be "sorted out". "It's a great programme and he's a great talent," he said. A lawyer for Mr Tymon said his client "intends to await the outcome of the BBC investigation and will make no comment until that investigation is complete". Pre-emptive Clarkson's approach to BBC bosses suggests he was trying to pre-empt any official complaint. The incident, at a Yorkshire hotel, is reported to have been witnessed by members of the public, as well as some of the production team. The presenter, 54, was given what he called his "final warning" last May after claims he used a racist word during filming. He later apologised for the incident which, although never broadcast, had been leaked to a tabloid newspaper. Last year, Top Gear was also censured by Ofcom for breaching broadcasting rules after Clarkson used a derogatory word for Asian people during its Burma special programme. A further incident during shooting in Argentina saw the show's executive producer, Andy Wilman, brand 2014 an "annus horribilis" for his team. Clarkson, and co-presenters May and Richard Hammond, are due to renegotiate their contracts next month.
[EX A]: Top Gear host Jeremy Clarkson initiated the BBC investigation which prompted his suspension, after he informed BBC bosses of the alleged "fracas".

[EX Q]: The woman was shipped from Nazareth House in Belfast to Australia when she was four. Now in her 60s, she said she wanted to see her records because two of her children had died at a young age. She said the information was "extremely important" as she had other children and grandchildren. She told the inquiry sitting in Banbridge on Wednesday that she was born to a Catholic mother in Dungannon and said she found out in recent years that her father was "a Protestant landowner". Explaining that one of her daughters had died as a baby, and a son died suddenly aged 26, in 2005, she said: "I need to know my health history because of the fact I have lost two children and there is nothing physically or medically that we can find out here in Australia." She said her other children and grandchildren needed to be aware of the medical history of her maternal and paternal families in Northern Ireland. The inquiry also heard on Wednesday about the state's knowledge of the migrant scheme. Senior counsel to the inquiry, Christine Smith, presented details of a letter from the Department of Home Affairs in 1955. It was written after an inspector from the department visited Nazareth House in Belfast. The inspector was told that another Catholic Children's Home, Rubane House in Kircubbin, could not cope with the numbers being sent there from Belfast. The alternative being considered, the letter suggested, was to send children to Australia. The inspector wrote: "Rubane can't absorb all their output and this is how they're to be disposed of." The HIA inquiry is examining the extent of child abuse in religious and state-run institutions in Northern Ireland from 1922 to 1995. Last week, the inquiry heard that 131 children from Northern Ireland, some as young as five, were sent to Australia as child migrants. Their evidence is due to be heard either by video link or in written statements over the next few weeks.
[EX A]: A witness at the Historical Institutional Abuse Inquiry has appealed for help to trace her Irish family's medical records.

[EX Q]: Police said the 19-year-old was held after he arrived at Merseyside Police HQ at about 02:30 GMT. Officers then went to an address in Prince Alfred Road in Wavertree, Liverpool where they found the woman's body. Merseyside Police said the victim's next of kin had been informed and a post-mortem would be carried out to establish her cause of death. The man, from Wavertree, is being questioned by detectives and the force said it was not looking for anyone else in connection with the death. Det Ch Insp Paul Speight said house-to-house inquiries were ongoing and asked for anyone with any information about the "tragic incident" to come forward. "If you were in the area at the time, saw or heard any suspicious behaviour, or have any CCTV or dashcam footage, please come forward," he said. Related Internet Links Merseyside Police
[EX A]:
A man has been arrested on suspicion of murdering a 20-year-old woman.

