Problem: Please answer a question about the following article about Geological history of Earth:
The Ordovician Period started at a major extinction event called the Cambrian-Ordovician extinction events some time about 485.4 ± 1.9 Ma. During the Ordovician the southern continents were collected into a single continent called Gondwana. Gondwana started the period in the equatorial latitudes and, as the period progressed, drifted toward the South Pole. Early in the Ordovician the continents Laurentia, Siberia and Baltica were still independent continents (since the break-up of the supercontinent Pannotia earlier), but Baltica began to move toward Laurentia later in the period, causing the Iapetus Ocean to shrink between them. Also, Avalonia broke free from Gondwana and began to head north toward Laurentia. The Rheic Ocean was formed as a result of this. By the end of the period, Gondwana had neared or approached the pole and was largely glaciated.
How long ago did the Ordovician period begin?
A: 485.4 ± 1.9 Ma.


Question: Read this and answer the question

The definition of antenna gain or power gain already includes the effect of the antenna's efficiency. Therefore, if one is trying to radiate a signal toward a receiver using a transmitter of a given power, one need only compare the gain of various antennas rather than considering the efficiency as well. This is likewise true for a receiving antenna at very high (especially microwave) frequencies, where the point is to receive a signal which is strong compared to the receiver's noise temperature. However, in the case of a directional antenna used for receiving signals with the intention of rejecting interference from different directions, one is no longer concerned with the antenna efficiency, as discussed above. In this case, rather than quoting the antenna gain, one would be more concerned with the directive gain which does not include the effect of antenna (in)efficiency. The directive gain of an antenna can be computed from the published gain divided by the antenna's efficiency.

Which gain does not iclude the effect of an antenna?
Answer: directive gain


Problem: Following the catastrophic events in Asia Minor, the monarchy was abolished via a referendum in 1924 and the Second Hellenic Republic was declared. Premier Georgios Kondylis took power in 1935 and effectively abolished the republic by bringing back the monarchy via a referendum in 1935. A coup d'état followed in 1936 and installed Ioannis Metaxas as the head of a dictatorial regime known as the 4th of August Regime. Although a dictatorship, Greece remained on good terms with Britain and was not allied with the Axis.
In what year did a coup take place and new dictatorship form?
The answer is the following: 1936


Chopin's harmonic innovations may have arisen partly from his keyboard improvisation technique. Temperley says that in his works "novel harmonic effects frequently result from the combination of ordinary appoggiaturas or passing notes with melodic figures of accompaniment", and cadences are delayed by the use of chords outside the home key (neapolitan sixths and diminished sevenths), or by sudden shifts to remote keys. Chord progressions sometimes anticipate the shifting tonality of later composers such as Claude Debussy, as does Chopin's use of modal harmony.
Who wrote about Chopin's "novel harmonic effects"?
Temperley


Input: Pain
In 1644, René Descartes theorized that pain was a disturbance that passed down along nerve fibers until the disturbance reached the brain, a development that transformed the perception of pain from a spiritual, mystical experience to a physical, mechanical sensation[citation needed]. Descartes's work, along with Avicenna's, prefigured the 19th-century development of specificity theory. Specificity theory saw pain as "a specific sensation, with its own sensory apparatus independent of touch and other senses". Another theory that came to prominence in the 18th and 19th centuries was intensive theory, which conceived of pain not as a unique sensory modality, but an emotional state produced by stronger than normal stimuli such as intense light, pressure or temperature. By the mid-1890s, specificity was backed mostly by physiologists and physicians, and the intensive theory was mostly backed by psychologists. However, after a series of clinical observations by Henry Head and experiments by Max von Frey, the psychologists migrated to specificity almost en masse, and by century's end, most textbooks on physiology and psychology were presenting pain specificity as fact.

Who migrated to the theory of specificity en mass?
Output: psychologists


Problem: Please answer a question about the following article about Nigeria:
Nigeria is divided into thirty-six states and one Federal Capital Territory, which are further sub-divided into 774 Local Government Areas (LGAs). The plethora of states, of which there were only three at independence, reflect the country's tumultuous history and the difficulties of managing such a heterogeneous national entity at all levels of government. In some contexts, the states are aggregated into six geopolitical zones: North West, North East, North Central, South East, South South, and South West.
How many geopolitical zones do people consider the Nigerian states to be in?
A:
six