TASK DEFINITION: In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.
PROBLEM: Passage: In 1924, Monteux began a ten-year association with the Concertgebouw Orchestra of Amsterdam, serving as "first conductor" ("eerste dirigent") alongside Willem Mengelberg, its long-serving chief conductor. The two musicians liked and respected one another, despite the difference in their approach to music-making: Monteux was scrupulous in his adherence to a composer's score and straightforward in his performances, while Mengelberg was well known for his virtuoso, sometimes wilful, interpretations and his cavalier attitude to the score ("Ve vill make some changements", as an English player quoted him). Their preferred repertoire overlapped in some of the classics, but Mengelberg had his own favourites from Bach's St. Matthew Passion to Mahler symphonies, and was happy to leave Debussy and Stravinsky to Monteux. Where their choices coincided, as in Beethoven, Brahms and Richard Strauss, Mengelberg was generous in giving Monteux at least his fair share of them.While in Amsterdam Monteux conducted a number of operas, including Pelléas et Mélisande (its Dutch premiere), Carmen, Les Contes d'Hoffmann, a Lully and Ravel double bill of Acis et Galatée and L'Heure espagnole, Gluck's Iphigénie en Tauride (also brought to the Paris Opéra) and Verdi's Falstaff. Toscanini had been invited to conduct the last of these, but he told the promoters that Monteux was his dearest colleague and the best conductor for Falstaff.During the first eight years of his association with the Concertgebouw, Monteux conducted between fifty and sixty concerts each season. In his final two years with the orchestra other conductors, notably the rising young Dutchman Eduard van Beinum, were allocated concerts that would previously have been given to Monteux, who amicably withdrew from his position in Amsterdam in 1934. He returned many times as a guest conductor.

SOLUTION: What is the full name of the rising conductor that was given concerts usually given to the man who conducted between fifty and sixty concerts each season?

PROBLEM: Passage: For his 1896 attempt to launch the balloon, Andrée had many eager volunteers to choose from. He picked Nils Gustaf Ekholm, an experienced Arctic meteorological researcher and formerly his boss during an 1882–1883 geophysical expedition to Spitsbergen, and Nils Strindberg, a brilliant student who was doing original research in physics and chemistry. The main scientific purpose of the expedition was to map the area by means of aerial photography, and Strindberg was both a devoted amateur photographer and a skilled constructor of advanced cameras.This was a team with many useful scientific and technical skills, but lacking any particular physical prowess or training for survival under extreme conditions. All three men were indoor types, and only one, Strindberg, was young. Andrée expected a sedentary voyage in a balloon basket, and strength and survival skills were far down on his list.Modern writers all agree that Andrée's North Pole scheme was unrealistic. He relied on the winds blowing more or less in the direction he wanted to go, on being able to fine-tune his direction with the drag ropes, on the balloon being sealed tight enough to stay airborne for 30 days, and on no ice or snow sticking to the balloon to weigh it down.In the attempt of 1896, the wind immediately refuted his optimism by blowing steadily from the north, straight at the balloon hangar at Danes Island, until the expedition had to pack up, let the hydrogen out of the balloon, and go home. It is now known that northerly winds are to be expected at Danes Island; but in the late-19th century, information on Arctic airflow and precipitation existed only as contested academic hypotheses. Even Ekholm, an Arctic climate researcher, had no objection to Andrée's theory of where the wind was likely to take them. The observational data simply did not exist.

SOLUTION: What is the full name of the person who had no objection to Andrée's theory of where the wind was likely to take them ?

PROBLEM: Passage: The Willamette River ( (listen) wil-AM-it) is a major tributary of the Columbia River, accounting for 12 to 15 percent of the Columbia's flow. The Willamette's main stem is 187 miles (301 km) long, lying entirely in northwestern Oregon in the United States. Flowing northward between the Oregon Coast Range and the Cascade Range, the river and its tributaries form the Willamette Valley, a basin that contains two-thirds of Oregon's population, including the state capital, Salem, and the state's largest city, Portland, which surrounds the Willamette's mouth at the Columbia.
Originally created by plate tectonics about 35 million years ago and subsequently altered by volcanism and erosion, the river's drainage basin was significantly modified by the Missoula Floods at the end of the most recent ice age. Humans began living in the watershed over 10,000 years ago. There were once many tribal villages along the lower river and in the area around its mouth on the Columbia. Indigenous peoples lived throughout the upper reaches of the basin as well.
Rich with sediments deposited by flooding and fed by prolific rainfall on the western side of the Cascades, the Willamette Valley is one of the most fertile agricultural regions in North America, and was thus the destination of many 19th-century pioneers traveling west along the Oregon Trail. The river was an important transportation route in the 19th century, although Willamette Falls, just upstream from Portland, was a major barrier to boat traffic. In the 21st century, major highways follow the river, and roads cross it on more than 50 bridges.
Since 1900, more than 15 large dams and many smaller ones have been built in the Willamette's drainage basin, 13 of which are operated by the U.S. Army Corps of Engineers (USACE). The dams are used primarily to produce hydroelectricity, to maintain reservoirs for recreation, and to prevent flooding. The river and its tributaries support 60 fish species, including many species of salmon and trout; this is despite the dams, other alterations, and pollution (especially on the river's lower reaches). Part of the Willamette Floodplain was established as a National Natural Landmark in 1987 and the river was named as one of 14 American Heritage Rivers in 1998.

SOLUTION:
What organization operates 13 of the dams built in the river that is a major tributary of the Columbia river?