Problem: Please answer a question about the following article about Republic of the Congo:
Sassou Nguesso aligned the country with the Eastern Bloc and signed a twenty-year friendship pact with the Soviet Union. Over the years, Sassou had to rely more on political repression and less on patronage to maintain his dictatorship.
What was an important tool of the Sassou government?
A: political repression
Problem: Please answer a question about the following article about 2008 Sichuan earthquake:
An article in Science suggested that the construction and filling of the Zipingpu Dam may have triggered the earthquake. The chief engineer of the Sichuan Geology and Mineral Bureau said that the sudden shift of a huge quantity of water into the region could have relaxed the tension between the two sides of the fault, allowing them to move apart, and could have increased the direct pressure on it, causing a violent rupture. The effect was "25 times more" than a year's worth of natural stress from tectonic movement. The government had disregarded warnings about so many large-scale dam projects in a seismically active area. Researchers have been denied access to seismological and geological data to examine the cause of the quake further.
What have researchers been denied?
A: access to seismological and geological data
Problem: Please answer a question about the following article about House music:
2010s saw multiple new sounds in house music developed by numerous DJs. Sweden knew a prominence of snare-less "Swedish progressive house" with the emergence of Sebastian Ingrosso, Axwell, Steve Angello (These three formed a trio called Swedish House Mafia), Avicii, Alesso, etc. Netherlands brought together a concept of "Dirty Dutch", electro house subgenre characterized by very abrasive leads and darker arpeggios, with prominent DJs Chuckie, Hardwell, Laidback Luke, Afrojack, R3hab, Bingo Players, Quintino, Alvaro, Cedric Gervais, 2G, etc. Elsewhere, fusion genres derivative of 2000s progressive house returned to prominence, especially with the help of DJs Calvin Harris, Eric Prydz, Mat Zo, Above & Beyond and Fonzerelli in Europe, Deadmau5, Kaskade, Steve Aoki, Porter Robinson and Wolfgang Gartner in the US and Canada. The growing popularity of such artists led to the emergence of electro house and progressive house blended sounds in popular music, such as singles Lady Gaga's "Marry the Night", The Black Eyed Peas' "The Best One Yet (The Boy)" and the will.i.am and Britney Spears "Scream & Shout". Big room house found increasing popularity since 2010, particularly through international dance music festivals such as Tomorrowland, Ultra Music Festival, and Electric Daisy Carnival.
Sebastian Ingrosso, Axwell, and Steve Angello formed what successful trio?
A: Swedish House Mafia
Problem: Please answer a question about the following article about Planck constant:
A watt balance is an instrument for comparing two powers, one of which is measured in SI watts and the other of which is measured in conventional electrical units. From the definition of the conventional watt W90, this gives a measure of the product KJ2RK in SI units, where RK is the von Klitzing constant which appears in the quantum Hall effect. If the theoretical treatments of the Josephson effect and the quantum Hall effect are valid, and in particular assuming that RK = h/e2, the measurement of KJ2RK is a direct determination of the Planck constant.
What value does RK represent?
A:
the von Klitzing constant which appears in the quantum Hall effect