input: Please answer the following: Given the following context:  Up until the mid-19th century, long stretches of the Colorado and Green rivers between Wyoming and Nevada remained largely unexplored due to their remote location and dangers of navigation. Because of the dramatic drop in elevation of the two rivers, there were rumors of huge waterfalls and violent rapids, and Native American tales strengthened their credibility. In 1869, one-armed Civil War veteran John Wesley Powell led an expedition from Green River Station in Wyoming, aiming to run the two rivers all the way down to St. Thomas, Nevada, near present-day Hoover Dam. Powell and nine men – none of whom had prior whitewater experience – set out in May. After braving the rapids of the Gates of Lodore, Cataract Canyon and other gorges along the Colorado, the party arrived at the mouth of the Little Colorado River, where Powell noted down arguably the most famous words ever written about the Grand Canyon of the Colorado: We are now ready to start on our way down the Great Unknown. Our boats, tied to a common stake, are chafing each other, as they are tossed by the fretful river. They ride high and buoyant, for their loads are lighter than we could desire. We have but a month's rations remaining. The flour has been re-sifted through the mosquito net sieve; the spoiled bacon has been dried, and the worst of it boiled; the few pounds of dried apples have been spread in the sun, and re-shrunken to their normal bulk; the sugar has all melted, and gone on its way down the river; but we have a large sack of coffee. The lighting of the boats has this advantage: they will ride the waves better, and we shall have little to carry when we make a portage. We are three-quarters of a mile in the depths of the earth, and the great river shrinks into insignificance, as it dashes its angry waves against the walls and cliffs, that rise to the world above; they are but puny ripples, and we but pigmies, running up and down the sands, or lost among the boulders. We have an unknown distance yet to run; an unknown river yet to explore....  answer the following question:  What were the name of the two rapids the people on the expedition had to brave?
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output: Cataract Canyon


input: Please answer the following: Given the following context:  In contemporary wartime San Francisco, chemist and blackmailer Albert Baker is killed by hit man Philip Raven, who recovers a stolen chemical formula. Raven is double-crossed by his employer, Willard Gates who pays him with marked bills and reports them to the Los Angeles Police Department as stolen from his company, Nitro Chemical Corporation of Los Angeles. Raven learns of the setup and decides to get revenge. LAPD detective lieutenant Michael Crane, who is vacationing in San Francisco to visit his girlfriend, nightclub singer Ellen Graham, is immediately assigned the case. He goes after Raven, but the assassin eludes him. Meanwhile, Gates hires Ellen to work in his LA nightclub after an audition where she sings and performs magic tricks. Then she is taken to a clandestine meeting with Senator Burnett, where she learns that Gates and Nitro Chemical are under investigation as suspected traitors, and is recruited to spy on Gates. Unknown to each other, she and Gates board a train for Los Angeles, followed by Raven. By chance, Raven and Ellen sit next to each other. The next morning, Gates is alarmed when he sees them asleep with Raven's head on her shoulder. He wires ahead to alert the police, but Raven forces Ellen at gunpoint to help him elude them again. He is about to kill her but is interrupted by workmen, allowing Ellen to flee. From Gates's club, she tries to contact Crane, but he has left San Francisco to return to LA.  answer the following question:  What's the full name of the person who unexpectedly becomes a spy?
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output: Ellen Graham


input: Please answer the following: Given the following context:  At that time, a Parisian ballet audience typically consisted of two diverse groups: the wealthy and fashionable set, who would be expecting to see a traditional performance with beautiful music, and a "Bohemian" group who, the poet-philosopher Jean Cocteau asserted, would "acclaim, right or wrong, anything that is new because of their hatred of the boxes". Monteux believed that the trouble began when the two factions   began attacking each other, but their mutual anger was soon diverted towards the orchestra: "Everything available was tossed in our direction, but we continued to play on". Around forty of the worst offenders were ejected—possibly with the intervention of the police, although this is uncorroborated. Through all the disturbances the performance continued without interruption. The unrest receded significantly during Part II, and by some accounts Maria Piltz's rendering of the final "Sacrificial Dance" was watched in reasonable silence. At the end there were several curtain calls for the dancers, for Monteux and the orchestra, and for Stravinsky and Nijinsky before the evening's programme continued.Among the more hostile press reviews was that of Le Figaro's critic, Henri Quittard, who called the work "a laborious and puerile barbarity" and added "We are sorry to see an artist such as M. Stravinsky involve himself in this disconcerting adventure". On the other hand, Gustav Linor, writing in the leading theatrical magazine Comoedia, thought the performance was superb, especially that of Maria Piltz; the disturbances, while deplorable, were merely "a rowdy debate" between two ill-mannered factions. Emile Raudin, of Les Marges, who had barely heard the music, wrote: "Couldn't we ask M. Astruc ... to set aside one performance for well-intentioned spectators? ... We could at least propose to evict the female element". The composer Alfredo Casella thought that the demonstrations were aimed at Nijinsky's choreography rather than at the music, a view shared by the critic Michel-Dimitri Calvocoressi, who...  answer the following question:  What two groups made up the typical ballet audience?
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output:
the wealthy and fashionable set