user: Please answer this: Found the following article online, use it to answer the question: What was the full name of the concert in San Fransisco where Bono met René Castro?  Recording sessions for The Joshua Tree began in January 1986 in Danesmoate House in Dublin and continued throughout the year. U2 briefly interrupted these sessions in June to join Amnesty International's A Conspiracy of Hope tour of benefit concerts. Following the first concert in San Francisco, lead singer Bono met René Castro, a Chilean mural artist. Castro had been tortured and held in a concentration camp for two years by the dictatorial Chilean government because his artwork criticised the Pinochet-led regime that seized power in 1973 during a coup d'état. Castro showed Bono a wall painting in the Mission District that depicted the ongoing plight in Chile and Argentina. He also learned of the Madres de Plaza de Mayo, a group of women whose children were forcibly disappeared by the Argentine government. The Madres' children were students who had opposed the government during the Dirty War, and the coup d'état that brought Jorge Rafael Videla to power. The Madres joined together to campaign for information regarding the locations of their children's bodies and the circumstances of their deaths, believing them to have been kidnapped, tortured, and murdered.Inspired by the mural, Bono took an extended break from recording into July, traveling to Nicaragua and El Salvador with his wife, Alison Hewson, to see first-hand the distress of peasants bullied by political conflicts and US military intervention. While there, they worked with the Central American Mission Partners (CAMP), a human rights and economic development organization. In El Salvador they met members of the Comité de Madres Monsignor Romero (COMADRES: Committee of the Mothers Monsignor Romero), an organization of women whose children were forcibly disappeared by the Salvadoran government during the Civil War because they opposed the military regime that was in power. At one point during the trip, Bono, Alison, and a member of CAMP were shot at by government troops while on their way to deliver aid to a group of farmers. The shots were a warning...
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Answer: A Conspiracy of Hope


Please answer this: Found the following article online, use it to answer the question: What is the full name of the person who is apprenticed to the undertaker?  A young woman in labour makes her way to a parish workhouse and dies after giving birth to a boy, who is systematically named Oliver Twist by the workhouse authorities. As the years go by, Oliver and the rest of the child inmates suffer from the callous indifference of the officials in charge: beadle Mr. Bumble and matron Mrs. Corney. At the age of nine, the hungry children draw straws; Oliver loses and has to ask for a second helping of gruel ("Please sir, I want some more"). For his impudence, he is promptly apprenticed to the undertaker Mr. Sowerberry, from whom he receives somewhat better treatment. However, when another worker, Noah, maligns his dead mother, Oliver flies into a rage and attacks him, earning the orphan a whipping. Oliver runs away to London. The Artful Dodger, a skilled young pickpocket, notices him and takes him to Fagin, an old Jew who trains children to be pickpockets. Fagin sends Oliver to watch and learn as the Dodger and another boy try to rob Mr. Brownlow, a rich, elderly gentleman. Their attempt is detected, but it is Oliver who is chased through the streets by a mob and arrested. A witness clears him. Mr. Brownlow takes a liking to the boy, and gives him a home. Oliver experiences the kind of happy life he has never had before, under the care of Mr. Brownlow and the loving housekeeper, Mrs. Bedwin. Meanwhile, Fagin is visited by the mysterious Monks, who has a strong interest in Oliver. He sends Monks to Bumble and Mrs. Corney (now Bumble's domineering wife); Monks buys from them the only thing that can identify Oliver's parentage, a locket containing his mother's portrait.
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Answer: Oliver Twist


Please answer this: Found the following article online, use it to answer the question: What is the name of the drilling fluid that is significantly more expensive than untreated petroleum fuels?  Drilling fluids are necessary for borehole stability in deep cores, and can also be used to circulate cuttings away from the bit.  Fluids used include water, ethanol/water and water/ethylene glycol mixtures, petroleum fuels, non-aromatic hydrocarbons, and n-butyl acetate. Water is the cheapest and cleanest option; it may be present on the glacial surface or may be created by thermal drilling.  In cold ice some form of antifreeze is necessary, or heat must be reapplied by reaming the hole periodically. Ethanol and water.  Ethanol acts as an anti-freeze in water; at sufficient concentrations it can reduce the freezing temperature of the mixture to well below any temperature likely to be encountered in ice drilling.  The concentration must be chosen to prevent the liquid freezing and also to maintain the borehole against the ice overburden pressure.  Because the density of the mixture decreases with lower temperatures, vertical convection will develop in boreholes where temperatures decrease with depth, as the lighter mixture rises.  This causes slush to form in the borehole, though successful drilling is still possible.  Ethanol is one of the cheapest options for a drilling fluid, and requires less storage space than other options because in use it is diluted with water.  A Soviet expedition left an 800 m borehole in Antarctica filled with ethanol and water at an ice temperature of −53 °C; after 11 months the borehole remained open and drilling was resumed with no problems.  A problem with this option is that the mixture will penetrate cores that have cracks. Ethylene glycol and water was used at Camp Century in 1966 in the lower part of the hole to dissolve the cuttings. Petroleum fuels.  This includes diesel, jet fuel, and kerosene. They are inexpensive and easily available, and were once in common use; disadvantages include flammability and the aromatics they contain, which are a health hazard. Non-aromatic hydrocarbons.  As of 2009 these had become the most commonly used drilling fluids; eliminating the...
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Answer:

assistant: Non-aromatic hydrocarbons