Problem: Mosaic:

In the following century Ravenna, the capital of the Western Roman Empire, became the center of late Roman mosaic art (see details in Ravenna section). Milan also served as the capital of the western empire in the 4th century. In the St Aquilinus Chapel of the Basilica of San Lorenzo, mosaics executed in the late 4th and early 5th centuries depict Christ with the Apostles and the Abduction of Elijah; these mosaics are outstanding for their bright colors, naturalism and adherence to the classical canons of order and proportion. The surviving apse mosaic of the Basilica of Sant'Ambrogio, which shows Christ enthroned between Saint Gervasius and Saint Protasius and angels before a golden background date back to the 5th and to the 8th century, although it was restored many times later. The baptistery of the basilica, which was demolished in the 15th century, had a vault covered with gold-leaf tesserae, large quantities of which were found when the site was excavated. In the small shrine of San Vittore in ciel d'oro, now a chapel of Sant'Ambrogio, every surface is covered with mosaics from the second half of the 5th century. Saint Victor is depicted in the center of the golden dome, while figures of saints are shown on the walls before a blue background. The low spandrels give space for the symbols of the four Evangelists.

What is the name of the mosaic in the Basilica of Sant'Ambrogio?
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A: apse


Problem: West spent much of the late-1990s producing records for a number of well-known artists and music groups. The third song on Foxy Brown's second studio album Chyna Doll was produced by West. Her second effort subsequently became the very first hip-hop album by a female rapper to debut at the top of the U.S. Billboard 200 chart in its first week of release. West produced three of the tracks on Harlem World's first and only album The Movement alongside Jermaine Dupri and the production duo Trackmasters. His songs featured rappers Nas, Drag-On, and R&B singer Carl Thomas. The ninth track from World Party, the last Goodie Mob album to feature the rap group's four founding members prior to their break-up, was co-produced by West with his manager Deric "D-Dot" Angelettie. At the close of the millennium, West ended up producing six songs for Tell 'Em Why U Madd, an album that was released by D-Dot under the alias of The Madd Rapper; a fictional character he created for a skit on The Notorious B.I.G.'s second and final studio album Life After Death. West's songs featured guest appearances from rappers such as Ma$e, Raekwon, and Eminem.
What rappers were featured in the songs that Kanye produced for Tell 'Em Why U Madd?
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Answer: Ma$e, Raekwon, and Eminem.


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
BJTs have three terminals, corresponding to the three layers of semiconductor—an emitter, a base, and a collector. They are useful in amplifiers because the currents at the emitter and collector are controllable by a relatively small base current. In an n–p–n transistor operating in the active region, the emitter–base junction is forward biased (electrons and holes recombine at the junction), and electrons are injected into the base region. Because the base is narrow, most of these electrons will diffuse into the reverse-biased (electrons and holes are formed at, and move away from the junction) base–collector junction and be swept into the collector; perhaps one-hundredth of the electrons will recombine in the base, which is the dominant mechanism in the base current. By controlling the number of electrons that can leave the base, the number of electrons entering the collector can be controlled. Collector current is approximately β (common-emitter current gain) times the base current. It is typically greater than 100 for small-signal transistors but can be smaller in transistors designed for high-power applications.
How many electrons are injected into the base region?
A: unanswerable


Context and question: In the tropics there is little variation in the length of day throughout the year, and it is always warm enough for a food supply, but altitudinal migration occurs in some tropical birds. There is evidence that this enables the migrants to obtain more of their preferred foods such as fruits.
What are tropical birds preferred foods?
Answer: fruits


Question: There has recently been an effort to reevaluate the influence of the Bible on Western constitutional law. In the Old Testament, there was some language in Deuteronomy imposing restrictions on the Jewish king, regarding such things as how many wives he could have, and how many horses he could own for his personal use. According to Professor Bernard M. Levinson, "This legislation was so utopian in its own time that it seems never to have been implemented...." The Deuteronomic social vision may have influenced opponents of the divine right of kings, including Bishop John Ponet in sixteenth-century England.
Is there an answer to this question: Book of the viable gives unlimited power Jewish monarchs?

Answer: unanswerable


Question: The Longmen Shan Fault System is situated in the eastern border of the Tibetan Plateau and contains several faults. This earthquake ruptured at least two imbricate structures in Longmen Shan Fault System, i.e. the Beichuan Fault and the Guanxian–Anxian Fault. In the epicentral area, the average slip in Beichuan Fault was about 3.5 metres (11 ft) vertical, 3.5 metres (11 ft) horizontal-parallel to the fault, and 4.8 metres (16 ft) horizontal-perpendicular to the fault. In the area about 30 kilometres (19 mi) northeast of the epicenter, the surface slip on Beichuan Fault was almost purely dextral strike-slip up to about 3 metres (9.8 ft), while the average slip in Guanxian–Anxian Fault was about 2 metres (6 ft 7 in) vertical and 2.3 metres (7 ft 7 in) horizontal.
Is there an answer to this question: What was the horizontal slippage in the Beichuan Fault at the epicenter?

Answer:
3.5 metres