Here is a question about this article: Electroluminescence as a phenomenon was discovered in 1907 by the British experimenter H. J. Round of Marconi Labs, using a crystal of silicon carbide and a cat's-whisker detector. Soviet inventor Oleg Losev reported creation of the first LED in 1927. His research was distributed in Soviet, German and British scientific journals, but no practical use was made of the discovery for several decades. Kurt Lehovec, Carl Accardo and Edward Jamgochian, explained these first light-emitting diodes in 1951 using an apparatus employing SiC crystals with a current source of battery or pulse generator and with a comparison to a variant, pure, crystal in 1953.
What is the answer to this question: Who is the Soviet man that created the first LED?
****
So... Oleg Losev

The problem: Answer a question about this article:
The highwayman Dick Turpin used the Swan Inn at Woughton-on-the-Green in Buckinghamshire as his base. In the 1920s John Fothergill (18761957) was the innkeeper of the Spread Eagle in Thame, Berkshire, and published his autobiography: An Innkeeper's Diary (London: Chatto & Windus, 1931). During his idiosyncratic occupancy many famous people came to stay, such as H. G. Wells. United States president George W. Bush fulfilled his lifetime ambition of visiting a 'genuine British pub' during his November 2003 state visit to the UK when he had lunch and a pint of non-alcoholic lager (Bush being a teetotaler) with British Prime Minister Tony Blair at the Dun Cow pub in Sedgefield, County Durham in Blair's home constituency. There were approximately 53,500 public houses in 2009 in the United Kingdom. This number has been declining every year, so that nearly half of the smaller villages no longer have a local pub.
In what year was An Innkeeper's Diary published?
****
The answer: 1931

Problem: Please answer a question about the following article about Treaty:
The Islamic Prophet Muhammad carried out a siege against the Banu Qaynuqa tribe known as the Invasion of Banu Qaynuqa in February 624 Muhammad ordered his followers to attack the Banu Qaynuqa Jews for allegedly breaking the treaty known as the Constitution of Medina by pinning the clothes of a Muslim woman, which led to her being stripped naked As a result, a Muslim killed a Jew in retaliation, and the Jews in turn killed the Muslim man. This escalated to a chain of revenge killings, and enmity grew between Muslims and the Banu Qaynuqa, leading to the siege of their fortress.:122 The tribe eventually surrendered to Muhammad, who initially wanted to kill the members of Banu Qaynuqa but ultimately yielded to Abdullah ibn Ubayy's insistence and agreed to expel the Qaynuqa.
Who's insistence led the Prophet Muhammad to expel the Banu Qaynuqa Jews instead of kill them?
A: Abdullah ibn Ubayy

Question: Read this and answer the question

San Diego was ranked as the 20th-safest city in America in 2013 by Business Insider. According to Forbes magazine, San Diego was the ninth-safest city in the top 10 list of safest cities in the U.S. in 2010. Like most major cities, San Diego had a declining crime rate from 1990 to 2000. Crime in San Diego increased in the early 2000s. In 2004, San Diego had the sixth lowest crime rate of any U.S. city with over half a million residents. From 2002 to 2006, the crime rate overall dropped 0.8%, though not evenly by category. While violent crime decreased 12.4% during this period, property crime increased 1.1%. Total property crimes per 100,000 people were lower than the national average in 2008.

What type of crime increased between 2002 and 2006?
Answer: property crime

Problem: The Soviet Union challenged the legitimacy of the war for several reasons. The ROK Army intelligence upon which Resolution 83 was based came from U.S. Intelligence; North Korea was not invited as a sitting temporary member of the UN, which violated UN Charter Article 32; and the Korean conflict was beyond the UN Charter's scope, because the initial northsouth border fighting was classed as a civil war. Because the Soviet Union was boycotting the Security Council at the time, legal scholars posited that deciding upon an action of this type required the unanimous vote of the five permanent members.
Where did the intelligence information that led to the passage of Resolution 83 come from?
The answer is the following: U.S. Intelligence

Input: Article: Replicated CDs are mass-produced initially using a hydraulic press. Small granules of heated raw polycarbonate plastic are fed into the press. A screw forces the liquefied plastic into the mold cavity. The mold closes with a metal stamper in contact with the disc surface. The plastic is allowed to cool and harden. Once opened, the disc substrate is removed from the mold by a robotic arm, and a 15 mm diameter center hole (called a stacking ring) is created. The time it takes to "stamp" one CD is usually two to three seconds.

Now answer this question: What is the term for the center hole in a CD?

Output:
stacking ring