Problem: Somalis:

In ancient Somalia, pyramidical structures known in Somali as taalo were a popular burial style, with hundreds of these dry stone monuments scattered around the country today. Houses were built of dressed stone similar to the ones in Ancient Egypt. There are also examples of courtyards and large stone walls enclosing settlements, such as the Wargaade Wall.

What were ancient Somali houses made out of?
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A: dressed stone


Problem: Valencia:

Among the parish churches are Saints John (Baptist and Evangelist), rebuilt in 1368, whose dome, decorated by Palonino, contains some of the best frescoes in Spain; El Templo (the Temple), the ancient church of the Knights Templar, which passed into the hands of the Order of Montesa and was rebuilt in the reigns of Ferdinand VI and Charles III; the former convent of the Dominicans, at one time the headquarters of the Capital General, the cloister of which has a beautiful Gothic wing and the chapter room, large columns imitating palm trees; the Colegio del Corpus Christi, which is devoted to the Blessed Sacrament, and in which perpetual adoration is carried on; the Jesuit college, which was destroyed in 1868 by the revolutionary Committee of the Popular Front, but later rebuilt; and the Colegio de San Juan (also of the Society), the former college of the nobles, now a provincial institute for secondary instruction.

Who decorated the Saints John's dome?
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A: Palonino


Problem: MP3:

The MP3 lossy audio data compression algorithm takes advantage of a perceptual limitation of human hearing called auditory masking. In 1894, the American physicist Alfred M. Mayer reported that a tone could be rendered inaudible by another tone of lower frequency. In 1959, Richard Ehmer described a complete set of auditory curves regarding this phenomenon. Ernst Terhardt et al. created an algorithm describing auditory masking with high accuracy. This work added to a variety of reports from authors dating back to Fletcher, and to the work that initially determined critical ratios and critical bandwidths.

The initial work was aimed at determining critical ratios and what else?
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A: critical bandwidths


Problem: Empiricism:

Hume maintained that all knowledge, even the most basic beliefs about the natural world, cannot be conclusively established by reason. Rather, he maintained, our beliefs are more a result of accumulated habits, developed in response to accumulated sense experiences. Among his many arguments Hume also added another important slant to the debate about scientific method — that of the problem of induction. Hume argued that it requires inductive reasoning to arrive at the premises for the principle of inductive reasoning, and therefore the justification for inductive reasoning is a circular argument. Among Hume's conclusions regarding the problem of induction is that there is no certainty that the future will resemble the past. Thus, as a simple instance posed by Hume, we cannot know with certainty by inductive reasoning that the sun will continue to rise in the East, but instead come to expect it to do so because it has repeatedly done so in the past.

Why does Hume say we can know the sun will rise in the east?
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A:
unanswerable