The problem: Answer a question about this article:
Orientation behaviour studies have been traditionally carried out using variants of a setup known as the Emlen funnel, which consists of a circular cage with the top covered by glass or wire-screen so that either the sky is visible or the setup is placed in a planetarium or with other controls on environmental cues. The orientation behaviour of the bird inside the cage is studied quantitatively using the distribution of marks that the bird leaves on the walls of the cage. Other approaches used in pigeon homing studies make use of the direction in which the bird vanishes on the horizon.
What is studied quantitatively inside the cage?
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The answer: The orientation behaviour


Problem: Please answer a question about the following article about Adult contemporary music:
Contemporary Christian music (CCM) has several subgenres, one being "Christian AC". Radio & Records, for instance, lists Christian AC among its format charts. There has been crossover to mainstream and hot AC formats by many of the core artists of the Christian AC genre, notably Amy Grant, Michael W. Smith, Kathy Troccoli, Steven Curtis Chapman, Plumb, and more recently, MercyMe.
What genre of music is performed by MercyMe?
A: Christian AC


Question: Read this and answer the question

The Kabul Shahi dynasties ruled the Kabul Valley and Gandhara (modern-day Pakistan and Afghanistan) from the decline of the Kushan Empire in the 3rd century to the early 9th century. The Shahis are generally split up into two eras: the Buddhist Shahis and the Hindu Shahis, with the change-over thought to have occurred sometime around 870. The kingdom was known as the Kabul Shahan or Ratbelshahan from 565-670, when the capitals were located in Kapisa and Kabul, and later Udabhandapura, also known as Hund for its new capital.

Until what century did the Kabul Shahi dynasties rule the Kabul Valley?
Answer: 9th century


Problem: A Macau resident was arrested on April 26 for posting a message on cyberctm.com encouraging people to disrupt the relay. Both orchidbbs.com and cyberctm.com Internet forums were shut down from May 2 to 4. This fueled speculation that the shutdowns were targeting speeches against the relay. The head of the Bureau of Telecommunications Regulation has denied that the shutdowns of the websites were politically motivated. About 2,200 police were deployed on the streets, there were no interruptions.
Who was arrested on April 26 for posting an online message?
The answer is the following: A Macau resident


Genocide has become an official term used in international relations. The word genocide was not in use before 1944. Before this, in 1941, Winston Churchill described the mass killing of Russian prisoners of war and civilians as "a crime without a name". In that year, a Polish-Jewish lawyer named Raphael Lemkin, described the policies of systematic murder founded by the Nazis as genocide. The word genocide is the combination of the Greek prefix geno- (meaning tribe or race) and caedere (the Latin word for to kill). The word is defined as a specific set of violent crimes that are committed against a certain group with the attempt to remove the entire group from existence or to destroy them.
What is the etymological basis of the word "genocide?"
Greek prefix geno- (meaning tribe or race) and caedere (the Latin word for to kill)


Here is a question about this article: With the help of Charles Stearn, an expert on vacuum pumps, in 1878, Swan developed a method of processing that avoided the early bulb blackening. This received a British Patent in 1880.[dubious – discuss] On 18 December 1878, a lamp using a slender carbon rod was shown at a meeting of the Newcastle Chemical Society, and Swan gave a working demonstration at their meeting on 17 January 1879. It was also shown to 700 who attended a meeting of the Literary and Philosophical Society of Newcastle upon Tyne on 3 February 1879. These lamps used a carbon rod from an arc lamp rather than a slender filament. Thus they had low resistance and required very large conductors to supply the necessary current, so they were not commercially practical, although they did furnish a demonstration of the possibilities of incandescent lighting with relatively high vacuum, a carbon conductor, and platinum lead-in wires. Besides requiring too much current for a central station electric system to be practical, they had a very short lifetime. Swan turned his attention to producing a better carbon filament and the means of attaching its ends. He devised a method of treating cotton to produce 'parchmentised thread' and obtained British Patent 4933 in 1880. From this year he began installing light bulbs in homes and landmarks in England. His house was the first in the world to be lit by a lightbulb and also the first house in the world to be lit by hydroelectric power. In 1878 the home of Lord Armstrong at Cragside was also among the first houses to be lit by electricity. In the early 1880s he had started his company. In 1881, the Savoy Theatre in the City of Westminster, London was lit by Swan incandescent lightbulbs, which was the first theatre, and the first public building in the world, to be lit entirely by electricity.
What is the answer to this question: Why was Swan's first lamp not commercially viable?
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So...
'parchmentised thread'