user: Problem: 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 ?

A: U2


Problem: The answer to the question: What is the first name of the man who's friend is executed by the Black and Tans? is inside the article: County Cork, Ireland, 1920. Dr. Damien O'Donovan is about to leave his native village to practise medicine in a London hospital. Meanwhile, his brother Teddy commands the local flying column of the Irish Republican Army. After a hurling match, Damien witnesses the summary execution of his friend, Micheál Ó Súilleabháin, by British Black and Tans. Although shaken, Damien rebuffs his friends' entreaties to stay in Ireland and join the IRA, saying that the war is unwinnable. As he is leaving town, Damien witnesses the British Army vainly trying to intimidate a railway personnel for refusing to permit the troops to board. In response, Damien decides to stay and is sworn into Teddy's IRA brigade. After drilling in the mountains, the column raids the village's Royal Irish Constabulary barracks to acquire revolvers, then uses them to assassinate four Auxiliaries. In the aftermath, Anglo-Irish landowner Sir John Hamilton coerces one of his servants, IRA member Chris Reilly, into passing information to the British Army's Intelligence Corps. As a result, the entire brigade is arrested. In their cell, Damien meets the train driver, Dan, a union official who shares Damien's socialist views. Meanwhile, British officers interrogate Teddy, pulling out his fingernails when he refuses to give them the names of IRA members. Johnny Gogan, a British soldier of Irish descent, helps the prisoners escape, but three are left behind. After the actions of Sir John and Chris are revealed to the IRA's intelligence network, both are taken hostage. As Teddy is still recovering, Damien is temporarily placed in command. News arrives that the three remaining IRA prisoners have been tortured and shot. Simultaneously, the brigade receives orders to "execute the spies"., can you guess it ?

A: Damien


Problem: The answer to the question: What is the full name of the test whose measurements can be used in hard snow and firn to depths of 5–10 m? is inside the article: Penetration testing involves inserting a probe into snow to determine the snow's mechanical properties.  Experienced snow surveyors can use an ordinary ski pole to test snow hardness by pushing it into the snow; the results are recorded based on the change in resistance felt as the pole is inserted.  A more scientific tool, invented in the 1930s but still in widespread use, is a ram penetrometer.  This takes the form of a rod with a cone at the lower end.  The upper end of the rod passes through a weight that is used as a hammer; the weight is lifted and released, and hits an anvil—a ledge around the rod which it cannot pass—which drives the rod into the snow.  To take a measurement, the rod is placed on the snow and the hammer is dropped one or more times; the resulting depth of penetration is recorded.  In soft snow a lighter hammer can be used to obtain more precise results; hammer weights range from 2 kg down to 0.1 kg.  Even with lighter hammers, ram penetrometers have difficulty distinguishing thin layers of snow, which limits their usefulness with regard to avalanche studies, since thin and soft layers are often involved in avalanche formation.Two lightweight tools are in wide use that are more sensitive than ram penetrometers.  A snow micro-penetrometer uses a motor to drive a rod into snow, measuring the force required; it is sensitive to 0.01–0.05 newtons, depending on the snow strength.  A SABRE probe consists of a rod that is inserted manually into snow; accelerometer readings are then used to determine the penetrative force needed at each depth, and stored electronically.For testing dense polar snow, a cone penetrometer test (CPT) is use, based on the equivalent devices used for soil testing.  CPT measurements can be used in hard snow and firn to depths of 5–10 m., can you guess it ?

A:

assistant: a cone penetrometer test