Problem: Please answer a question about the following article about Planck constant:
Prior to Einstein's paper, electromagnetic radiation such as visible light was considered to behave as a wave: hence the use of the terms "frequency" and "wavelength" to characterise different types of radiation. The energy transferred by a wave in a given time is called its intensity. The light from a theatre spotlight is more intense than the light from a domestic lightbulb; that is to say that the spotlight gives out more energy per unit time and per unit space(and hence consumes more electricity) than the ordinary bulb, even though the colour of the light might be very similar. Other waves, such as sound or the waves crashing against a seafront, also have their own intensity. However, the energy account of the photoelectric effect didn't seem to agree with the wave description of light.
What terms describe different types of radiation?
A: "frequency" and "wavelength"

Question: Read this and answer the question

In an attempt at reform, Eritrean government officials and NGO representatives have participated in numerous public meetings and dialogues. In these sessions they have answered questions as fundamental as, "What are human rights?", "Who determines what are human rights?", and "What should take precedence, human or communal rights?" In 2007, the Eritrean government also banned female genital mutilation. In Regional Assemblies and religious circles, Eritreans themselves speak out continuously against the use of female circumcision. They cite health concerns and individual freedom as being of primary concern when they say this. Furthermore, they implore rural peoples to cast away this ancient cultural practice. Additionally, a new movement called Citizens for Democratic Rights in Eritrea aimed at bringing about dialogue between the government and opposition was formed in early 2009. The group consists of ordinary citizens and some people close to the government.

Who, along with ordinary citizens, makes up the Citizens for Democratic Rights in Eritrea?
Answer: some people close to the government

Problem: The city also had a large class of free people of color. By 1860, 3,785 free people of color were in Charleston, nearly 18% of the city's black population, and 8% of the total population. Free people of color were far more likely to be of mixed racial background than slaves. Many were educated, practiced skilled crafts, and some even owned substantial property, including slaves. In 1790, they established the Brown Fellowship Society for mutual aid, initially as a burial society. It continued until 1945.
What percentage of Charleston's population were free people of color?
The answer is the following: 8%

Providing 25% of Namibia's revenue, mining is the single most important contributor to the economy. Namibia is the fourth largest exporter of non-fuel minerals in Africa and the world's fourth largest producer of uranium. There has been significant investment in uranium mining and Namibia is set to become the largest exporter of uranium by 2015. Rich alluvial diamond deposits make Namibia a primary source for gem-quality diamonds. While Namibia is known predominantly for its gem diamond and uranium deposits, a number of other minerals are extracted industrially such as lead, tungsten, gold, tin, fluorspar, manganese, marble, copper and zinc. There are offshore gas deposits in the Atlantic Ocean that are planned to be extracted in the future. According to "The Diamond Investigation", a book about the global diamond market, from 1978, De Beers, the largest diamond company, bought most of the Namibian diamonds, and would continue to do so, because "whatever government eventually comes to power they will need this revenue to survive".
Where does Namibia rank in the exportation of uranium?
fourth

Input: Mandolin
In his 1805 mandolin method, Anweisung die Mandoline von selbst zu erlernen nebst einigen Uebungsstucken von Bortolazzi, Bartolomeo Bortolazzi popularised the Cremonese mandolin, which had four single-strings and a fixed bridge, to which the strings were attached. Bortolazzi said in this book that the new wire strung mandolins were uncomfortable to play, when compared with the gut-string instruments. Also, he felt they had a "less pleasing...hard, zither-like tone" as compared to the gut string's "softer, full-singing tone." He favored the four single strings of the Cremonese instrument, which were tuned the same as the Neapolitan.

Who popularised the Cremonese Mandolin?
Output: Bartolomeo Bortolazzi

Problem: Please answer a question about the following article about Czech language:
Czech syntax has a subjectverbobject sentence structure. In practice, however, word order is flexible and used for topicalization and focus. Although Czech has a periphrastic passive construction (like English), colloquial word-order changes frequently produce the passive voice. For example, to change "Peter killed Paul" to "Paul was killed by Peter" the order of subject and object is inverted: Petr zabil Pavla ("Peter killed Paul") becomes "Paul, Peter killed" (Pavla zabil Petr). Pavla is in the accusative case, the grammatical object (in this case, the victim) of the verb.
What kind of passive construction does Czech have?
A:
periphrastic