Problem: Background: Led Zeppelin were an English rock band formed in London in 1968. The group consisted of guitarist Jimmy Page, singer Robert Plant, bassist and keyboardist John Paul Jones, and drummer John Bonham. The band's heavy, guitar-driven sound has led them to be cited as one of the progenitors of heavy metal. Their style drew from a wide variety of influences, including blues, psychedelia, and folk music.
Context: Following their triumphant Earls Court appearances, Led Zeppelin took a holiday and planned an autumn tour in America, scheduled to open with two outdoor dates in San Francisco. In August 1975, however, Plant and his wife Maureen were involved in a serious car crash while on holiday in Rhodes, Greece. Plant suffered a broken ankle and Maureen was badly injured; a blood transfusion saved her life. Unable to tour, he headed to the Channel Island of Jersey to spend August and September recuperating, with Bonham and Page in tow. The band then reconvened in Malibu, California. During this forced hiatus much of the material for their next album, Presence, was written. By this time, Led Zeppelin were the world's number one rock attraction, having outsold most bands of the time, including the Rolling Stones. Presence, released in March 1976, marked a change in the Led Zeppelin sound towards more straightforward, guitar-based jams, departing from the acoustic ballads and intricate arrangements featured on their previous albums. Though it was a platinum seller, Presence received a mixed reaction among fans and the music press, with some critics suggesting that the band's excesses may have caught up with them. Page had begun using heroin during recording sessions for the album, a habit which may have affected the band's later live shows and studio recordings, although this has been denied by Page. Because of Plant's injuries, Led Zeppelin did not tour in 1976. Instead, the band completed the concert film The Song Remains the Same and the accompanying soundtrack album. The film premiered in New York City on 20 October 1976, but was given a lukewarm reception by critics and fans. The film was particularly unsuccessful in the UK, where, unwilling to tour since 1975 because of their tax exile status, Led Zeppelin faced an uphill battle to recapture the public's affection. In 1977, Led Zeppelin embarked on another major concert tour of North America. The band set another attendance record, with an audience of 76,229 at their Silverdome concert on 30 April. It was, according to the Guinness Book of Records, the largest attendance to that date for a single act show. Although the tour was financially profitable, it was beset by off-stage problems. On 19 April, over 70 people were arrested as about 1,000 fans tried to gatecrash Cincinnati Riverfront Coliseum for two sold-out concerts, while others tried to gain entry by throwing rocks and bottles through glass doors. On 3 June, a concert at Tampa Stadium was cut short because of a severe thunderstorm, despite tickets indicating "Rain or Shine". A riot broke out, resulting in arrests and injuries. After the 23 July show at the Day on the Green festival at the Oakland Coliseum in Oakland, California, Bonham and members of Led Zeppelin's support staff were arrested after a member of promoter Bill Graham's staff was badly beaten during the band's performance. The following day's second Oakland concert was the group's final live appearance in the United States. Two days later, as they checked in at a French Quarter hotel for their 30 July performance at the Louisiana Superdome, Plant received news that his five-year-old son, Karac, had died from a stomach virus. The rest of the tour was immediately cancelled, prompting widespread speculation about Led Zeppelin's future.
Question: What recording did they do after their hiatus?
Answer: The band then reconvened in Malibu, California. During this forced hiatus much of the material for their next album, Presence, was written.

Background: Cook was born at his parents' house, "Shearbridge", in Middle Warberry Road, Torquay, Devon. He was the only son and eldest of the three children of Alexander Edward "Alec" Cook (1906-1984), a colonial civil servant, and his wife Ethel Catherine Margaret, nee Mayo (1908-1994). He was educated at Radley College and Pembroke College, Cambridge, where he studied French and German. As a student, Cook initially intended to become a career diplomat like his father, but Britain "had run out of colonies", as he put it.
Context: In late 1989, Cook married for the third time, to Malaysian-born property developer Chiew Lin Chong (1945-2016) in Torbay, Devon. She provided him with some stability in his personal life and he reduced his drinking, to the extent that for a time he was teetotal. He lived alone in a small 18th-century house in Perrins Walk, Hampstead, while his wife kept her own property only 100 yards away. Cook returned to the BBC as Sir Arthur Streeb-Greebling for an appearance with Ludovic Kennedy in A Life in Pieces. The 12 interviews saw Sir Arthur recount his life based on the Twelve Days of Christmas. Unscripted interviews with Cook as Streeb-Greebling and satirist Chris Morris were recorded in late 1993 and broadcast as Why Bother? on BBC Radio 3. Morris described them: It was a very different style of improvisation from what I'd been used to, working with people like Steve Coogan, Doon Mackichan and Rebecca Front, because those On the Hour and The Day Today things were about trying to establish a character within a situation, and Peter Cook was really doing 'knight's move' and 'double knight's move' thinking to construct jokes or ridiculous scenes flipping back on themselves, and it was amazing. I mean, I held out no great hopes that he wouldn't be a boozy old sack of lard with his hair falling out and scarcely able to get a sentence out, because he hadn't given much evidence that that wouldn't be the case. But, in fact, he stumbled in with a Safeways bag full of Kestrel lager and loads of fags and then proceeded to skip about mentally with the agility of a grasshopper. Really quite extraordinary. On 17 December 1993, Cook appeared on Clive Anderson Talks Back as four characters - biscuit tester and alien abductee Norman House, football manager and motivational speaker Alan Latchley, judge Sir James Beauchamp and rock legend Eric Daley. The following day he appeared on BBC2 performing links for Arena's "Radio Night". He also appeared, on 26 December, in the 1993 Christmas special of One Foot in the Grave ("One Foot in the Algarve"), playing a muckraking tabloid photographer. Before the end of the next year his mother died, and a grief-stricken Cook returned to heavy drinking. He made his last TV appearance on the show Pebble Mill at One in November 1994.
Question: what were the four characters?
Answer:
biscuit tester and alien abductee Norman House, football manager and motivational speaker Alan Latchley, judge Sir James Beauchamp and rock legend Eric Daley.