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.
--------
Question: Passage: In Rainbows was downloaded an estimated 1.2 million times on the day of release, but Radiohead's management did not release sales figures, claiming that the distribution was intended to boost later retail sales. Colin Greenwood explained the internet release as a way of avoiding the "regulated playlists" and "straitened formats" of radio and TV, ensuring fans around the world could all experience the music at the same time, and preventing leaks in advance of a physical release. O'Brien said the self-release strategy sold fewer records, but made more money for the band as there was no middleman. A special "discbox" edition of In Rainbows, containing the record on vinyl, a book of artwork, and a CD of extra songs, was also sold from Radiohead's website and shipped in late 2007.The retail version of In Rainbows was released in the UK in late December 2007 on XL Recordings and in North America in January 2008 on TBD Records, charting at number one both in the UK and in the US. The success – after having been legally available for months as a free download – was Radiohead's highest chart success in the US since Kid A. It became their fifth UK number-one album and sold more than three million copies in one year. The album received acclaim for its more accessible sound and personal lyrics. It was nominated for the Mercury Music Prize and won the 2009 Grammy awards for Best Alternative Music Album and Best Boxed or Special Limited Edition Package. It was nominated for five other Grammy awards, including Radiohead's third nomination for Album of the Year. Yorke and Jonny Greenwood performed "15 Step" with the University of Southern California Marching Band at the televised award show.

Answer: Which  album received acclaim for its more accessible sound and personal lyrics?


Question: Passage: Good Girl Gone Bad received generally favorable reviews from music critics. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream critics, the album received an average score of 72 based on 17 reviews. Uncut called it a "shiny, trans-atlantic blend of Europop vim, R&B grit and Caribbean bounce." Andy Kellman of AllMusic deemed it quintessential pop music and said each of its tracks was a potential hit. Quentin B. Huff of PopMatters praised the album, describing it as "more raw, perhaps edgier and more risqué" than Rihanna's previous material. Kelefa Sanneh of The New York Times wrote that the album "sounds as if it were scientifically engineered to deliver hits". Peter Robinson of The Observer commended her collaborators for "masking her own shortcomings" and commented that, "While Rihanna lacks her peers' charisma, she's a great vessel for exhilarating mainstream pop." Pitchfork Media's Tom Breihan found the album varied and satisfying. Neil Drumming of Entertainment Weekly felt that, although it "goes bad when Rihanna tries her hand at treacly ballads and glum sentiment", at times Good Girl Gone Bad is a "thrilling throwback to more than a decade ago, when upstart producers haphazardly mashed R&B with hip-hop to create chunky jeep anthems such as Mary J. Blige's 'Real Love'."In a mixed review, Rodney Dugue of The Village Voice felt that the album "never settles on a sound" and only cited its three Timbaland-produced songs as highlights. Although he found the ballads to be improvements from Rihanna's previous albums, Slant Magazine's Sal Cinquemani criticized the lyrics, particularly those written by Justin Timberlake, as an "Achilles' high heel for Rihanna". Alex Macpherson of The Guardian found Rihanna to be "ill-suited" for its dance-pop songs and stated, "The gimmicky samples and pounding beats bury her personality, and the summery reggae of her first two albums is sorely missed." Robert Christgau of MSN Music cited "Umbrella" as a "choice cut", indicating "a good song on an album that isn't worth your time or money".

Answer: What is the full name of the man who found the album that had Timbaland produce on it to have ballads that were improvements from the last album?


Question: Passage: After most of the Colorado River basin became part of the U.S. in 1846, much of the river's course was still the subject of myths and speculation. Several expeditions charted the Colorado in the mid-19th century – one of which, led by John Wesley Powell, was the first to run the rapids of the Grand Canyon. American explorers collected valuable information that was later used to develop the river for navigation and water supply. Large-scale settlement of the lower basin began in the mid- to late-19th century, with steamboats providing transportation from the Gulf of California to landings along the river that linked to wagon roads to the interior. Starting in the 1860s, gold and silver strikes drew prospectors to parts of the upper Colorado River basin.
Large engineering works began around the start of the 20th century, with major guidelines established in a series of international and U.S. interstate treaties known as the "Law of the River". The U.S. federal government was the main driving force behind the construction of dams and aqueducts, although many state and local water agencies were also involved. Most of the major dams were built between 1910 and 1970; the system keystone, Hoover Dam, was completed in 1935. The Colorado is now considered among the most controlled and litigated rivers in the world, with every drop of its water fully allocated.
The environmental movement in the American Southwest has opposed the damming and diversion of the Colorado River system because of detrimental effects on the ecology and natural beauty of the river and its tributaries. During the construction of Glen Canyon Dam, environmental organizations vowed to block any further development of the river, and a number of later dam and aqueduct proposals were defeated by citizen opposition. As demands for Colorado River water continue to rise, the level of human development and control of the river continues to generate controversy.

Answer:
What was the last name of the person who led the first expedition to run the rapids of the Grand Canyon?