Input: Article: On December 30, 1922, the First Congress of the Soviets of the USSR approved the Treaty on the Creation of the USSR, by which Russia was united with the Ukrainian Soviet Socialist Republic, Byelorussian Soviet Socialist Republic, and Transcaucasian Soviet Federal Socialist Republic into a single federal state, the Soviet Union. Later treaty was included in the 1924 Soviet Constitution,[clarification needed] adopted on January 31, 1924 by the Second Congress of Soviets of the USSR.

Now answer this question: Along with the Ukrainian Soviet Socialist Republic and Byelorussian Soviet Socialist Republic, what state joined Russia to form the Soviet Union?

Output: Transcaucasian Soviet Federal Socialist Republic

Article: Besides the city wall, other famous Ming-era structures in the city included the famous Ming Xiaoling Mausoleum and Porcelain Tower, although the latter was destroyed by the Taipings in the 19th century either in order to prevent a hostile faction from using it to observe and shell the city or from superstitious fear of its geomantic properties.

Question: One possibility the Tower was destroyed was to prevent it's use by a hostile enemy. What is the other possibility?
Ans: superstitious fear of its geomantic properties

Here is a question about this article: Internationally, the torch and its accompanying party traveled in a chartered Air China Airbus A330 (registered B-6075), painted in the red and yellow colors of the Olympic Games. Air China was chosen by the Beijing Committees of the Olympic Game as the designated Olympic torch carrier in March 2008 for its long-standing participation in the Olympic cause. The plane traveled a total of 137,000 km (85,000 mi) for a duration of 130 days through 21 countries and regions.
What is the answer to this question: How many days did the plane travel?
****
So... 130 days

The problem: Answer a question about this article:
Nick Fradiani won the season, defeating Clark Beckham. By winning, Fradiani became the first winner from the Northeast region. Fradiani released "Beautiful Life" as his coronation single while Beckham released "Champion". Jax, the third place finalist, also released a single called "Forcefield".
What was Beckham's first release?
****
The answer: Champion

Problem: Please answer a question about the following article about Old English:
Old English developed from a set of Anglo-Frisian or North Sea Germanic dialects originally spoken by Germanic tribes traditionally known as the Angles, Saxons, and Jutes. As the Anglo-Saxons became dominant in England, their language replaced the languages of Roman Britain: Common Brittonic, a Celtic language, and Latin, brought to Britain by Roman invasion. Old English had four main dialects, associated with particular Anglo-Saxon kingdoms: Mercian, Northumbrian, Kentish and West Saxon. It was West Saxon that formed the basis for the literary standard of the later Old English period, although the dominant forms of Middle and Modern English would develop mainly from Mercian. The speech of eastern and northern parts of England was subject to strong Old Norse influence due to Scandinavian rule and settlement beginning in the 9th century.
What language family did Common Brittonic belong to?
A: Celtic

Question: Read this and answer the question

In the semiconductor industry, infrared light can be used to characterize materials such as thin films and periodic trench structures. By measuring the reflectance of light from the surface of a semiconductor wafer, the index of refraction (n) and the extinction Coefficient (k) can be determined via the Forouhi-Bloomer dispersion equations. The reflectance from the infrared light can also be used to determine the critical dimension, depth, and sidewall angle of high aspect ratio trench structures.

What letter represents the index of refraction?
Answer:
n