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.

[EX Q]: Passage: Bloc Party confirmed a preliminary track list of 13 songs in August 2006; this included future bonus tracks "England" and "We Were Lovers". A low-quality rip of A Weekend in the City was leaked in November and showed a track list of 11 songs. Wichita Recordings did not comment, but the band members were quoted as being worried about a reduction in the potential impact of the album's content and sales. Bloc Party started a promotional tour of North America the same month with Panic! at the Disco, but cut it short after three concerts when Tong suffered a collapsed lung. The focus was changed to interviews throughout the world to explain the album's stylised lyrics and composition in the run-up to its release.Final tweaks on the album were completed in December 2006 in London. A high-quality version was leaked in January 2007 and its contents were confirmed by Okereke. Journalists who obtained an official copy of the album's final mix suggested that it featured electronically tampered rock soundscapes in the vein of Radiohead, New Order, and Björk. Bloc Party previewed A Weekend in the City in its entirety on 24 January 2007 at the Bournemouth Old Firestation, a performance which coincided with the Japanese release of the album. The first single, "The Prayer", was released on 29 January. The band performed at a special BBC Radio 1 showcase at Maida Vale Studios on 30 January as a precursor to a February promotional tour of the UK.The album was released in the rest of the world in the first week of February. The title comes as a tangent to the central theme of the album, "the living noise of a metropolis". The cover art is part of A Modern Project by German photographer Rut Blees Luxemburg, famous for her night cityscapes of London and for the cover art of The Streets' Original Pirate Material. The photograph is an aerial image of London's Westway, which shows the road and the adjacent sports pitches lit by the sodium glow of street lamps, and was chosen because the band believed "it was important we captured London breathing". Luxemburg has explained that "in this picture you can see how intricately and optimistically public space in the city is shared".
[EX A]: Whose members were quoted as being worried about a reduction in the potential impact of the album's content and sales?

[EX Q]: Passage: A little redhead, freckled 9-year-old boy (whose name is not mentioned during the movie, but is revealed in the very end of the movie, as well as in the credits, to be Lil' Pimp) is unable to adapt to suburban life, as his only friend is a foul mouthed gerbil and faces constant rejection by his peers. He accidentally meets a prostitute under the name of Sweet Chiffon, who takes him to her working place, a bar named "the Playground", where he befriends the pimp "Fruit Juice", who gives him a small amount of "pimp glitter". He decides he wants to become a pimp. 
The following day at school, during show and tell he is scorned by his classmates for not having a living male relative and decides to use the pimp glitter to summon Fruit Juice, who consequently impresses the whole class. When he visits the Playground again, Fruit Juice alters the boy's style and dresses him as a pimp, too. Meanwhile, mayor Tony Gold threatens to close Fruit Juice's bar, unless he is given 90% of the profits. After this incident the boy's mother goes in search of him, first directed to a gay bar and informed by Sweet Chiffon of a "nasty midget" closely resembling her son and then to the Playground. The boy refuses to return home to his mother, of which mayor Tony is informed directly and takes advantage, accusing Fruit Juice of keeping the boy against his will.  He is promptly arrested and his bar is closed down. Afterwards, mayor Tony Gold kidnaps Fruit Juice's prostitutes, in order to exploit them, while assigning two policemen to plant a bomb in the closed Playground.
[EX A]: What is the name of the person Sweet Chiffon takes to her working place?

[EX Q]: Passage: Human habitation in the Sierra Nevada region of California reaches back  8,000 to 10,000 years ago. Historically attested Native American populations, such as the Sierra Miwok, Mono and Paiute, belong to the Uto-Aztecan and Utian phyla.
In the mid-19th century, a band of Native Americans called the Ahwahnechee lived in Yosemite Valley. The California Gold Rush greatly increased the number of non-indigenous people in the region.  Tensions between Native Americans and white settlers escalated into the Mariposa War. As part of this conflict, settler James Savage led the Mariposa Battalion into Yosemite Valley in 1851, in pursuit of Ahwaneechees led by Chief Tenaya.  Accounts from the battalion, especially from Dr. Lafayette Bunnell, popularized Yosemite Valley as a scenic wonder.
In 1864, Yosemite Valley and the Mariposa Grove of giant sequoia trees were transferred from federal to state ownership. Yosemite pioneer Galen Clark became the park's first guardian. Conditions in Yosemite Valley were made more hospitable to people and access to the park was improved in the late 19th century. Naturalist John Muir and others became increasingly alarmed about the excessive exploitation of the area. Their efforts helped establish Yosemite National Park in 1890. Yosemite Valley and the Mariposa Grove were added to the national park in 1906.
The United States Army had jurisdiction over the national park from 1891 to 1914, followed by a brief period of civilian stewardship. The newly formed National Park Service took over the park's administration in 1916. Improvements to the park helped to increase visitation during this time. Preservationists led by Muir and the Sierra Club failed to save Hetch Hetchy Valley from becoming a reservoir in 1923. In 1964, 89 percent of the park was set aside in a highly protected wilderness area, and other protected areas were added adjacent to the park. The once-famous Yosemite Firefall, created by pushing red hot embers off a cliff near Glacier Point at night, was discontinued in the mid-to-late 20th century along with other activities that were deemed to be inconsistent with protection of the national park.
[EX A]:
What event happened because to the California Gold Rush?