Article: An early advantage of AC is that the power-wasting resistors used in DC locomotives for speed control were not needed in an AC locomotive: multiple taps on the transformer can supply a range of voltages. Separate low-voltage transformer windings supply lighting and the motors driving auxiliary machinery. More recently, the development of very high power semiconductors has caused the classic "universal" AC/DC motor to be largely replaced with the three-phase induction motor fed by a variable frequency drive, a special inverter that varies both frequency and voltage to control motor speed. These drives can run equally well on DC or AC of any frequency, and many modern electric locomotives are designed to handle different supply voltages and frequencies to simplify cross-border operation.

Question: What was a disadvantage of DC system?
Ans: power-wasting resistors


Here is a question about this article: Sociologist Rodney Stark states that Jehovah's Witness leaders are "not always very democratic" and that members "are expected to conform to rather strict standards," but adds that "enforcement tends to be very informal, sustained by the close bonds of friendship within the group", and that Jehovah's Witnesses see themselves as "part of the power structure rather than subject to it." Sociologist Andrew Holden states that most members who join millenarian movements such as Jehovah's Witnesses have made an informed choice. However, he also states that defectors "are seldom allowed a dignified exit", and describes the administration as autocratic.
What is the answer to this question: How do Jehovah's Witnesses see themselves in regards to the power structure of the church?
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So... "part of the power structure rather than subject to it."


The problem: Answer a question about this article:
Beyoncé has received numerous awards. As a solo artist she has sold over 15 million albums in the US, and over 118 million records worldwide (a further 60 million additionally with Destiny's Child), making her one of the best-selling music artists of all time. The Recording Industry Association of America (RIAA) listed Beyoncé as the top certified artist of the 2000s, with a total of 64 certifications. Her songs "Crazy in Love", "Single Ladies (Put a Ring on It)", "Halo", and "Irreplaceable" are some of the best-selling singles of all time worldwide. In 2009, The Observer named her the Artist of the Decade and Billboard named her the Top Female Artist and Top Radio Songs Artist of the Decade. In 2010, Billboard named her in their "Top 50 R&B/Hip-Hop Artists of the Past 25 Years" list at number 15. In 2012 VH1 ranked her third on their list of the "100 Greatest Women in Music". Beyoncé was the first female artist to be honored with the International Artist Award at the American Music Awards. She has also received the Legend Award at the 2008 World Music Awards and the Billboard Millennium Award at the 2011 Billboard Music Awards.
How many certifications was Beyonce awarded by the RIAA?
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The answer: 64


Problem: Please answer a question about the following article about Mosaic:
In 1913 the Zliten mosaic, a Roman mosaic famous for its many scenes from gladiatorial contests, hunting and everyday life, was discovered in the Libyan town of Zliten. In 2000 archaeologists working in Leptis Magna, Libya, uncovered a 30 ft length of five colorful mosaics created during the 1st or 2nd century AD. The mosaics show a warrior in combat with a deer, four young men wrestling a wild bull to the ground, and a gladiator resting in a state of fatigue, staring at his slain opponent. The mosaics decorated the walls of a cold plunge pool in a bath house within a Roman villa. The gladiator mosaic is noted by scholars as one of the finest examples of mosaic art ever seen — a "masterpiece comparable in quality with the Alexander Mosaic in Pompeii."
What scenes are depicted on the Zliten mosaic?
A: gladiatorial contests


Question: Read this and answer the question

The "Notre Dame Victory March" is the fight song for the University of Notre Dame. It was written by two brothers who were Notre Dame graduates. The Rev. Michael J. Shea, a 1904 graduate, wrote the music, and his brother, John F. Shea, who earned degrees in 1906 and 1908, wrote the original lyrics. The lyrics were revised in the 1920s; it first appeared under the copyright of the University of Notre Dame in 1928. The chorus is, "Cheer cheer for old Notre Dame, wake up the echos cheering her name. Send a volley cheer on high, shake down the thunder from the sky! What though the odds be great or small, old Notre Dame will win over all. While her loyal sons are marching, onward to victory!"

Who wrote the original lyrics to the Notre Dame Victory March?
Answer: John F. Shea


Most of the Korean Presbyterian denominations share the same name in Korean, 대한예수교장로회 (literally means the Presbyterian Church of Korea or PCK), tracing its roots to the United Presbyterian Assembly before its long history of disputes and schisms. The Presbyterian schism began with the controversy in relation to the Japanese shrine worship enforced during the Japanese colonial period and the establishment of a minor division (Koryu-pa, 고려파, later The Koshin Presbyterian Church in Korea, Koshin 고신) in 1952. And in 1953 the second schism happened when the theological orientation of the Chosun Seminary (later Hanshin University) founded in 1947 could not be tolerated in the PCK and another minor group (The Presbyterian Church in the Republic of Korea, Kijang, 기장) was separated. The last major schism had to do with the issue of whether the PCK should join the WCC. The controversy divided the PCK into two denominations, The Presbyterian Church of Korea (Tonghap, 통합) and The General Assembly of Presbyterian Church in Korea (Hapdong, 합동) in 1959. All major seminaries associated with each denomination claim heritage from the Pyung Yang Theological Seminary, therefore, not only Presbyterian University and Theological Seminary and Chongsin University which are related to PCK but also Hanshin University of PROK all celebrated the 100th class in 2007, 100 years from the first graduates of Pyung Yang Theological Seminary.
In what year did the Korean church celebrate the 100th class?
2007