Question: Who is the performer of Live at the employer of The Hippopotamus's author?

full_context: Document 1: Past Mortem: Past Mortem is a detective novel by Ben Elton first published in 2004. It is about a serial killer on the loose in England, mainly in the London area, and Scotland Yard's attempts at tracking him or her down. At the same time, "Past Mortem" raises a number of sociological, psychological and moral questions such as bullying, revenge, "getting a life" versus living in the past, domestic violence, and the changing market value of people as they get older. Apart from its serious aspects, the book also contains a lot of humour, especially when the respective private entanglements of Detective Inspector Edward Newson, the officer in charge of the police investigation, and his assistant, Detective Sergeant Natasha Wilkie, are described. However, as one critic put it, "some of the descriptions of the sex scenes might prove a bit much for the faint-hearted".
Document 2: BBC Sessions (Cocteau Twins album): BBC Sessions is an album of BBC studio recordings by the band Cocteau Twins released in 1999 by Bella Union in the UK and Rykodisc in the US. The album spanned the band's career from the early 1980s through the 1990s. Much of the first disk was taken from a series of early 1980s Peel sessions. The second disk contained several tracks recorded during the group's performance on the 1980s Radio 1 series "Saturday Live". The compilation peaked at No. 87 on the UK Albums Chart.
Document 3: The Autobiography of a Flea: The Autobiography of a Flea is an anonymous erotic novel first published in 1887 in London by Edward Avery. Later research has revealed that the author was a London lawyer of the time named Stanislas de Rhodes.
Document 4: Stephen Fry in America: Stephen Fry in America is a six-part BBC television series in which Stephen Fry travels across the United States. In the six-part series he travels, mostly in a London cab, through all 50 of the U.S. states and Washington, D.C..
Document 5: The Hippopotamus: The Hippopotamus (1994) is a comic novel by Stephen Fry. Written in part as an epistolary novel, it is largely narrated by the main character Edward "Ted" Wallace. Wallace is an alcoholic washed-up poet and theatre critic who, having been fired from his newspaper job, accepts a lucrative commission from his terminally ill goddaughter to investigate rumours of miracle healings at Swafford Hall, country mansion of Wallace's old friend Lord Logan.
Document 6: The Grand Tour: The four agreed to produce the series following their departures from the BBC series Top Gear with an initial agreement of 36 episodes over three years. Episodes are released weekly to those with Amazon Prime Video accounts, repeats of the first series began airing on traditional broadcasters in late 2017. As of December 2016 the show was made available to an additional 195 countries and various territories. Studio audience segments for the first series were filmed in the travelling tent between 17 July and 11 December 2016 in various countries, while for the second series the tent was stationed permanently in the Cotswolds. Series one was filmed over the course of mid - to late 2016 and premiered on 18 November 2016. The second series was filmed over the same time period the following year; however, filming was set back due to various illnesses and injuries suffered by the presenters. Due to this, it premiered on 8 December 2017.
Document 7: The Ode Less Travelled: The Ode Less Travelled: Unlocking the Poet Within is a book by author, actor, comedian, and director Stephen Fry about writing poetry. Fry covers metre, rhyme, many common and arcane poetic forms, and offers poetry exercises, contrasting modern and classic poets.
Document 8: Hip Flask (comics): Hieronymous "Hip" Flask is a fictional anthropomorphic hippopotamus who appears in comic books published by Active Images and Image Comics. He was created by Richard Starkings.
Document 9: Live on Blueberry Hill: The audience recording is one of the first Led Zeppelin bootlegs, and one of the first ever rock and roll bootlegs. It was released on the Blimp label. The album was reissued on the Trademark of Quality label and shipped to England. The album sold so many copies that many fans thought it was a legal release. The sleeve notes describe it as "One hundred and six minutes and fifty three seconds of pure alive rock."
Document 10: List of states and territories of the United States: The United States of America is a federal republic consisting of 50 states, a federal district (Washington, D.C., the capital city of the United States), five major territories, and various minor islands. The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico; the two other states, Alaska and Hawaii, are in the northwestern part of North America and an archipelago in the mid-Pacific, respectively, while the territories are scattered throughout the Pacific Ocean and the Caribbean Sea.
Document 11: Fry's English Delight: Fry's English Delight is a BBC Radio 4 documentary series in which language enthusiast Stephen Fry explores various aspects of the English language.
Document 12: Ned Ward: Ned Ward (1667 – 20 June 1731), also known as Edward Ward, was a satirical writer and publican in the late 17th and early 18th century, based in London. His most famous work is "The London Spy". Published in 18 monthly instalments starting in November 1698, it was described by its author as a "complete survey" of the London scene. It was first published in book form in 1703.
Document 13: Live at the BBC (Sandy Denny album): Live at the BBC is a four disc compilation of British folk singer songwriter Sandy Denny's BBC sessions from 1966 to 1973 and contains almost all her solo work for the corporation. Disc 4 of the set is a DVD of Denny performing three songs on the music programme "One in ten" in 1971: the only surviving solo footage of her. This compilation superseded the earlier one-disc set issued on the Strange Fruit label in 1997 that due to rights issues was withdrawn on the day of release thereby creating a highly collectable disc up until the release of this comprehensive set.
Document 14: BBC Sessions (Led Zeppelin album): BBC Sessions is a compilation album featuring studio sessions and a live concert recorded by English rock group Led Zeppelin for the BBC. It was released on 11 November 1997, by Atlantic Records. Disc one consists of material from four different 1969 BBC sessions. Disc two contains most of the 1 April 1971 concert from the Paris Theatre in London. Disc three was only included in a limited run of album releases and features rare interviews from 1969, 1976/1977, and 1990.
Document 15: Live at the BBC (Fleetwood Mac album): Live at the BBC is a double compact disc compilation album by British blues rock band Fleetwood Mac, recorded at various BBC radio sessions between 1967 and 1971. It contains many tracks by Fleetwood Mac which are otherwise unavailable.
ground_truth: Fleetwood Mac
sub_queries: The Hippopotamus >> author Answer: Stephen Fry
Stephen Fry >> employer Answer: BBC
Live at the BBC >> performer Answer: Fleetwood Mac