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: After usurping the throne of the Later Zhou dynasty, Emperor Taizu of Song (r. 960–976) spent sixteen years conquering the rest of China, reuniting much of the territory that had once belonged to the Han and Tang empires and ending the upheaval of the Five Dynasties and Ten Kingdoms period. In Kaifeng, he established a strong central government over the empire. The establishment of this capital marked the start of the Northern Song period. He ensured administrative stability by promoting the civil service examination system of drafting state bureaucrats by skill and merit (instead of aristocratic or military position) and promoted projects that ensured efficiency in communication throughout the empire. In one such project, cartographers created detailed maps of each province and city that were then collected in a large atlas. Emperor Taizu also promoted groundbreaking scientific and technological innovations by supporting such works as the astronomical clock tower designed and built by the engineer Zhang Sixun.The Song court maintained diplomatic relations with Chola India, the Fatimid Caliphate of Egypt, Srivijaya, the Kara-Khanid Khanate of Central Asia, the Goryeo kingdom in Korea, and other countries that were also trade partners with Japan. Chinese records even mention an embassy from the ruler of "Fu lin" (拂菻, i.e. the Byzantine Empire), Michael VII Doukas, and its arrival in 1081. However, China's closest neighbouring states had the greatest impact on its domestic and foreign policy. From its inception under Taizu, the Song dynasty alternated between warfare and diplomacy with the ethnic Khitans of the Liao dynasty in the northeast and with the Tanguts of the Western Xia in the northwest. The Song dynasty used military force in an attempt to quell the Liao dynasty and to recapture the Sixteen Prefectures, a territory under Khitan control since 938 that was traditionally considered to be part of China proper (Most parts of today's Beijing and Tianjin). Song forces were repulsed by the Liao forces, who engaged in aggressive yearly campaigns into Northern Song territory until 1005, when the signing of the Shanyuan Treaty ended these northern border clashes. The Song were forced to provide tribute to the Khitans, although this did little damage to the Song economy since the Khitans were economically dependent upon importing massive amounts of goods from the Song. More significantly, the Song state recognized the Liao state as its diplomatic equal. The Song created an extensive defensive forest along the Song-Liao border to thwart potential Khitan cavalry attacks.

SOLUTION: What is the name of the person that supported the scientific innovations while in charge?

PROBLEM: Passage: Most park visitors sightsee using the scenic drive, which provides access to 13 viewpoints over the amphitheaters. Bryce Canyon has eight marked and maintained hiking trails that can be hiked in less than a day (round trip time, trailhead): Mossy Cave (one hour, State Route 12 northwest of Tropic), Rim Trail (5–6 hours, anywhere on rim), Bristlecone Loop (one hour, Rainbow Point), and Queens Garden (1–2 hours, Sunrise Point) are easy to moderate hikes. Navajo Loop (1–2 hours, Sunset Point) and Tower Bridge (2–3 hours, north of Sunrise Point) are moderate hikes. Fairyland Loop (4–5 hours, Fairyland Point) and Peekaboo Loop (3–4 hours, Bryce Point) are strenuous hikes. Several of these trails intersect, allowing hikers to combine routes for more challenging hikes.
The park also has two trails designated for overnight hiking: the 9-mile (14 km) Riggs Spring Loop Trail and the 23-mile (37 km) Under-the-Rim Trail. Both require a backcountry camping permit. In total there are 50 miles (80 km) of trails in the park.
More than 10 miles (16 km) of marked but ungroomed skiing trails are available off of Fairyland, Paria, and Rim trails in the park. Twenty miles (32 km) of connecting groomed ski trails are in nearby Dixie National Forest and Ruby's Inn.
The air in the area is so clear that on most days from Yovimpa and Rainbow points, Navajo Mountain and the Kaibab Plateau can be seen 90 miles (140 km) away in Arizona. On extremely clear days, the Black Mesas of eastern Arizona and western New Mexico can be seen some 160 miles (260 km) away.The park also has a 7.4 magnitude night sky, making it one of the darkest in North America. Stargazers can, therefore, see 7,500 stars with the naked eye, while in most places fewer than 2,000 can be seen due to light pollution, and in many large cities only a few dozen can be seen. Park rangers host public stargazing events and evening programs on astronomy, nocturnal animals, and night sky protection. The Bryce Canyon Astronomy Festival, typically held in June, attracts thousands of visitors. In honor of this astronomy festival, Asteroid 49272 was named after the national park.There are two campgrounds in the park, North Campground and Sunset Campground. Loop A in North Campground is open year-round. Additional loops and Sunset Campground are open from late spring to early autumn. The 114-room Bryce Canyon Lodge is another way to stay overnight in the park.

SOLUTION: Which hiking trail in Bryce Canyon has the longest estimated hiking time?

PROBLEM: Passage: All band members of Bloc Party conceived A Weekend in the City during 2005 while on tour in support of their critically acclaimed debut album Silent Alarm. Despite missing their home city of London, the quartet became increasingly disillusioned with the culture in the area each time they sporadically returned. Band member Gordon Moakes has noted, "The contrast we saw between being away on tour and being home ... we would see that London wasn't changing really and that the people we'd grown up with were part of that." Okereke wrote many songs in 2005 and early 2006 and used a concept he called "Urbanite Relaxation" to expand upon the themes of life and leisure in the metropolis. The band recorded around 30 soundchecks for the initial lyrics using a MiniDisc player. The rest of the tracks were written in April 2006 before they entered the studio recording process.
The band members drew up a shortlist of possible producers in early 2006, which included dance music-oriented staff such as Chemical Brothers sound engineer Steve Dub and high-profile producers like Garret "Jacknife" Lee. At the time, Moakes told Rolling Stone that the album would hopefully include electronic, processed beats and a sound in the vein of alternative rock band Radiohead and indie rock ensemble TV on the Radio. Bloc Party wanted to expand their sonic palette without losing the musical "jerkiness" of Silent Alarm. They selected Lee—who had worked with world-renowned act U2 and indie rock band Snow Patrol—based on the rapport that developed between the two parties while recording the demo song "I Still Remember", which later appeared in A Weekend in the City.Moakes has explained the choice of producer by stating that the band members were looking to work with someone who could help them craft an accomplished album, "although as much as anything it's about finding someone who you'd want to spend six weeks in an enclosed space with". Before the studio sessions, Bloc Party listened to varied musical sources, from composers Philip Glass, György Ligeti, and Krzysztof Penderecki to urban artists Amerie and Missy Elliott. The band members were largely disillusioned with the evolution of contemporary guitar music and aimed to re-create the highly stylised production values of R&B and hip-hop records, while relying on an atmosphere similar to neo-classical music.

SOLUTION:
What are the full names of the urban artists that the band who were largely disillusioned with the evolution of contemporary guitar music listened to for inspiration?