Input: Article: A CD is read by focusing a 780 nm wavelength (near infrared) semiconductor laser housed within the CD player, through the bottom of the polycarbonate layer. The change in height between pits and lands results in a difference in the way the light is reflected. By measuring the intensity change with a photodiode, the data can be read from the disc. In order to accommodate the spiral pattern of data, the semiconductor laser is placed on a swing arm within the disc tray of any CD player. This swing arm allows the laser to read information from the centre to the edge of a disc, without having to interrupt the spinning of the disc itself.

Now answer this question: What is used to discern the change of intensity in light on a CD?

Output: photodiode


Article: The allies' most advanced technologies were showcased by the anti-aircraft defence against the German V-1 cruise missiles (V stands for Vergeltungswaffe, "retaliation weapon"). The 419th and 601st Antiaircraft Gun Battalions of the US Army were first allocated to the Folkestone-Dover coast to defend London, and then moved to Belgium to become part of the "Antwerp X" project. With the liberation of Antwerp, the port city immediately became the highest priority target, and received the largest number of V-1 and V-2 missiles of any city. The smallest tactical unit of the operation was a gun battery consisting of four 90 mm guns firing shells equipped with a radio proximity fuse. Incoming targets were acquired and automatically tracked by SCR-584 radar, developed at the MIT Rad Lab. Output from the gun-laying radar was fed to the M-9 director, an electronic analog computer developed at Bell Laboratories to calculate the lead and elevation corrections for the guns. With the help of these three technologies, close to 90% of the V-1 missiles, on track to the defence zone around the port, were destroyed.

Question: What city got attacked by more V-1 and V-2 missiles than any other?
Ans: Antwerp


Here is a question about this article: Palmerston died in 1865, and after a brief ministry led by Russell, Derby returned to power. In 1866, Victoria attended the State Opening of Parliament for the first time since Albert's death. The following year she supported the passing of the Reform Act 1867 which doubled the electorate by extending the franchise to many urban working men, though she was not in favour of votes for women. Derby resigned in 1868, to be replaced by Benjamin Disraeli, who charmed Victoria. "Everyone likes flattery," he said, "and when you come to royalty you should lay it on with a trowel." With the phrase "we authors, Ma'am", he complimented her. Disraeli's ministry only lasted a matter of months, and at the end of the year his Liberal rival, William Ewart Gladstone, was appointed prime minister. Victoria found Gladstone's demeanour far less appealing; he spoke to her, she is thought to have complained, as though she were "a public meeting rather than a woman".
What is the answer to this question: Who returned to power after Russels brief rule of the ministry?
****
So... Derby


The problem: Answer a question about this article:
Adolescence (from Latin adolescere, meaning "to grow up") is a transitional stage of physical and psychological human development that generally occurs during the period from puberty to legal adulthood (age of majority). The period of adolescence is most closely associated with the teenage years, though its physical, psychological and cultural expressions may begin earlier and end later. For example, although puberty has been historically associated with the onset of adolescent development, it now typically begins prior to the teenage years and there has been a normative shift of it occurring in preadolescence, particularly in females (see precocious puberty). Physical growth, as distinct from puberty (particularly in males), and cognitive development generally seen in adolescence, can also extend into the early twenties. Thus chronological age provides only a rough marker of adolescence, and scholars have found it difficult to agree upon a precise definition of adolescence.
What is another term for legal adulthood?
****
The answer: age of majority


Problem: Please answer a question about the following article about Freemasonry:
The earliest known American lodges were in Pennsylvania. The Collector for the port of Pennsylvania, John Moore, wrote of attending lodges there in 1715, two years before the formation of the first Grand Lodge in London. The Premier Grand Lodge of England appointed a Provincial Grand Master for North America in 1731, based in Pennsylvania. Other lodges in the colony obtained authorisations from the later Antient Grand Lodge of England, the Grand Lodge of Scotland, and the Grand Lodge of Ireland, which was particularly well represented in the travelling lodges of the British Army. Many lodges came into existence with no warrant from any Grand Lodge, applying and paying for their authorisation only after they were confident of their own survival.
When was a Provincial Grand Master for North America appointed?
A: 1731


Question: Read this and answer the question

Mali's constitution provides for an independent judiciary, but the executive continues to exercise influence over the judiciary by virtue of power to appoint judges and oversee both judicial functions and law enforcement. Mali's highest courts are the Supreme Court, which has both judicial and administrative powers, and a separate Constitutional Court that provides judicial review of legislative acts and serves as an election arbiter. Various lower courts exist, though village chiefs and elders resolve most local disputes in rural areas.

What controls do the supreme court have?
Answer:
both judicial and administrative powers