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.

Input: Consider Input: 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.

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


Input: Consider Input: Passage: In 1990, Zappa was diagnosed with terminal prostate cancer. The disease had been developing unnoticed for ten years and was considered inoperable. After the diagnosis, Zappa devoted most of his energy to modern orchestral and Synclavier works. Shortly before his death in 1993 he completed Civilization Phaze III, a major Synclavier work which he had begun in the 1980s.In 1991, Zappa was chosen to be one of four featured composers at the Frankfurt Festival in 1992 (the others were John Cage, Karlheinz Stockhausen, and Alexander Knaifel). Zappa was approached by the German chamber ensemble Ensemble Modern which was interested in playing his music for the event. Although ill, he invited them to Los Angeles for rehearsals of new compositions and new arrangements of older material. Zappa also got along with the musicians, and the concerts in Germany and Austria were set up for later in the year. Zappa also performed in 1991 in Prague, claiming that "was the first time that he had a reason to play his guitar in 3 years", and that that moment was just "the beginning of a new country", and asked the public to "try to keep your country unique, do not change it into something else".In September 1992, the concerts went ahead as scheduled but Zappa could only appear at two in Frankfurt due to illness. At the first concert, he conducted the opening "Overture", and the final "G-Spot Tornado" as well as the theatrical "Food Gathering in Post-Industrial America, 1992" and "Welcome to the United States" (the remainder of the program was conducted by the ensemble's regular conductor Peter Rundel). Zappa received a 20-minute ovation. G-Spot Tornado was performed with Canadian dancer Louise Lecavalier. It was his last professional public appearance as the cancer was spreading to such an extent that he was in too much pain to enjoy an event that he otherwise found "exhilarating". Recordings from the concerts appeared on The Yellow Shark (1993), Zappa's last release during his lifetime, and some material from studio rehearsals appeared on the posthumous Everything Is Healing Nicely (1999).

Output: In what city was Zappa's last professional public appearance?


Input: Consider Input: Passage: On October 18, 2010, Dylan released Volume 9 of his Bootleg Series, The Witmark Demos. This comprised 47 demo recordings of songs taped between 1962 and 1964 for Dylan's earliest music publishers: Leeds Music in 1962, and Witmark Music from 1962 to 1964. One reviewer described the set as "a hearty glimpse of young Bob Dylan changing the music business, and the world, one note at a time." The critical aggregator website Metacritic awarded the album a Metascore of 86, indicating "universal acclaim". In the same week, Sony Legacy released Bob Dylan: The Original Mono Recordings, a box set that for the first time presented Dylan's eight earliest albums, from Bob Dylan (1962) to John Wesley Harding (1967), in their original mono mix in the CD format. The CDs were housed in miniature facsimiles of the original album covers, replete with original liner notes. The set was accompanied by a booklet featuring an essay by music critic Greil Marcus.On April 12, 2011, Legacy Recordings released Bob Dylan in Concert – Brandeis University 1963, taped at Brandeis University on May 10, 1963, two weeks prior to the release of The Freewheelin' Bob Dylan. The tape was discovered in the archive of music writer Ralph J. Gleason, and the recording carries liner notes by Michael Gray, who says it captures Dylan "from way back when Kennedy was President and the Beatles hadn't yet reached America. It reveals him not at any Big Moment but giving a performance like his folk club sets of the period... This is the last live performance we have of Bob Dylan before he becomes a star."The extent to which his work was studied at an academic level was demonstrated on Dylan's 70th birthday on May 24, 2011, when three universities organized symposia on his work. The University of Mainz, the University of Vienna, and the University of Bristol invited literary critics and cultural historians to give papers on aspects of Dylan's work. Other events, including tribute bands, discussions and simple singalongs, took place around the world, as reported in The Guardian: "From Moscow to Madrid, Norway to Northampton and Malaysia to his home state of Minnesota, self-confessed 'Bobcats' will gather today to celebrate the 70th birthday of a giant of popular music.".


Output: What is the first name of the person who  released Volume 9 of his Bootleg Series in October 2010?