The answer to the question: What is the name of the group that wanted to return to their old recording ethos of "the band in a room playing together"? is inside the article: Following the mixed success of their musical pursuits in the 1990s, U2 sought to simplify their sound; the Edge said that with Pop, the group had "taken the deconstruction of the rock 'n' roll band format to its absolute 'nth degree". For their tenth album, All That You Can't Leave Behind, the group wanted to return to their old recording ethos of "the band in a room playing together". Reuniting with Eno and Lanois, U2 began working on the album in late 1998. After their experiences with being pressured to complete Pop, the band were content to work without deadlines. With Bono's schedule limited by his commitments to debt relief for Jubilee 2000 and the other band members spending time with their families, the recording sessions stretched through August 2000.Released in October of that year, All That You Can't Leave Behind was seen by critics as a "back to basics" album, on which the group returned to a more mainstream, conventional rock sound. For many of those not won over by the band's forays into dance music, it was considered a return to grace; Rolling Stone called it U2's "third masterpiece" alongside The Joshua Tree and Achtung Baby. The album debuted at number one in 32 countries and sold 12 million copies. Its lead single, "Beautiful Day", was a worldwide hit, reaching number one in Ireland, the UK, Australia, and Canada, while peaking at number 21 in the US. The song earned Grammy Awards for Song of the Year, Best Rock Performance by a Duo or Group with Vocal, and Record of the Year. At the awards ceremony, Bono declared that U2 were "reapplying for the job ... [of] the best band in the world". The album's other singles were worldwide hits as well; "Stuck in a Moment You Can't Get Out Of", "Elevation", and "Walk On" reached number one in Canada, while charting in the top five in the UK and top ten in Australia., can you guess it ?
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Answer: U2


The answer to the question: What is the name of the person Oswald assumes Leo is working for? is inside the article: A childhood accident leaves Leo mute and his devout Amish mother refuses surgery. As an adult in 2035, he works as a bartender at a Berlin strip club owned by Maksim and dates cocktail waitress Naadirah. She confides in her friend Luba that she has not told Leo about her past or her desperate need for money. After Stuart, a rowdy customer, sexually harasses Naadirah, Leo assaults him. Naadirah talks Leo down by telling him that she needs to keep her job. Naadirah shows up at Leo's apartment and attempts to tell him about something important. Leo shows her an elaborate bed he has been carving as a present for her. Naadirah is overcome with emotion and they have sex. Elsewhere, Maksim's mobsters meet two American surgeons, Cactus Bill and Duck, who run a black-market clinic. Bill desperately wants to leave Berlin and has pressed Maksim to provide forged documents for him and his young daughter, Josie. Duck, however, enjoys living in Berlin and runs a side business where he installs implants and performs cybernetic surgery. Stuart returns to the strip club and taunts Leo, leading to a fight and Maksim firing Leo. When he's unable to contact Naadirah, Leo asks Luba for help, but Luba refuses. An anonymous text message leads Leo to a black-market bazaar run by Stuart. Bill and Josie are there, and Bill takes Josie away as Stuart confronts Leo. Suddenly remembering that Naadirah wrote an address on his notepad a while back, Leo leaves the bazaar after using charcoal to read the imprint.  Naadirah's address leads Leo to Oswald. When Leo expresses interest in a picture of Naadirah, Oswald assumes Leo works for Maksim's underling Nicky Simsek, who is skimming money from Maksim's prostitutes. Leo meets with Simsek, who is babysitting Josie. Leo befriends Josie and leaves the money from Oswald and a note incriminating Simsek in front of Maksim's henchmen., can you guess it ?
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Answer: Nicky Simsek


The answer to the question: What partially collapsed, forming large (5–10 km wide) calderas? is inside the article: The first eruptions of Nevado del Ruiz occurred about 1.8 million years ago at the beginning of the Pleistocene epoch. Three primary eruption periods in the history of the massif have been identified: ancestral, older and present. During the ancestral period between one million to two million years ago, a complex of large stratovolcanoes was created. Between 1.0 million and 0.8 million years ago, they partially collapsed, forming large (5–10 km wide) calderas. During the older period, which lasted from 0.8 million to 0.2 million years ago, a new complex of large stratovolcanoes developed (including Older Ruiz, Tolima, Quindio, and Santa Isabel). Once again explosive summit calderas formed from 0.2 million to 0.15 million years ago.The present period began about 150,000 years ago and involved the development of the present volcanic edifice through the emplacement of lava domes made of andesite and dacite (igneous rocks) inside older calderas. During the past 11,000 years, Nevado del Ruiz passed through at least 12 eruption stages, which included multiple slope failures (rock avalanches), pyroclastic flows and lahars leading to partial destruction of the summit domes. During the past several thousand years, eruptions of the volcanoes in the Ruiz–Tolima massif have mostly been small, and the pyroclastic flow deposits have been much less voluminous than during the Pleistocene. Since the volcano's earlier eruptions are not recorded, volcanologists have used tephrochronology to date them.During recorded history, eruptions have consisted primarily of a central vent eruption (in the caldera) followed by an explosive eruption, then lahars. Ruiz's earliest identified Holocene eruption was about 6660 BC, and further eruptions occurred in 1245 BC ± 150 years (dated through radiocarbon dating), about 850 BC, 200 BC ± 100 years, 350 AD ± 300 years, 675 AD ± 50 years, in 1350, 1541 (perhaps), 1570, 1595, 1623, 1805, 1826, 1828 (perhaps),[b] 1829, 1831, 1833 (perhaps),[b] 1845, 1916, December 1984 – March 1985, September..., can you guess it ?
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Answer:
a complex of large stratovolcanoes