Problem: Please answer a question about the following article about Time:
Time has historically been closely related with space, the two together merging into spacetime in Einstein's special relativity and general relativity. According to these theories, the concept of time depends on the spatial reference frame of the observer, and the human perception as well as the measurement by instruments such as clocks are different for observers in relative motion. For example, if a spaceship carrying a clock flies through space at (very nearly) the speed of light, its crew does not notice a change in the speed of time on board their vessel because everything traveling at the same speed slows down at the same rate (including the clock, the crew's thought processes, and the functions of their bodies). However, to a stationary observer watching the spaceship fly by, the spaceship appears flattened in the direction it is traveling and the clock on board the spaceship appears to move very slowly.
In which of Einstein's two theories do time and space merge into spacetime?
A: special relativity and general relativity
Problem: Please answer a question about the following article about Han dynasty:
General Dong Zhuo (d. 192 AD) found the young emperor and his brother wandering in the countryside. He escorted them safely back to the capital and was made Minister of Works, taking control of Luoyang and forcing Yuan Shao to flee. After Dong Zhuo demoted Emperor Shao and promoted his brother Liu Xie as Emperor Xian, Yuan Shao led a coalition of former officials and officers against Dong, who burned Luoyang to the ground and resettled the court at Chang'an in May 191 AD. Dong Zhuo later poisoned Emperor Shao.
What position would the young Liu Xie eventually be promoted to?
A: Emperor Xian
Problem: Please answer a question about the following article about Classical music:
The family of instruments used, especially in orchestras, grew. A wider array of percussion instruments began to appear. Brass instruments took on larger roles, as the introduction of rotary valves made it possible for them to play a wider range of notes. The size of the orchestra (typically around 40 in the Classical era) grew to be over 100. Gustav Mahler's 1906 Symphony No. 8, for example, has been performed with over 150 instrumentalists and choirs of over 400.
To what number did the size of the orchestra grow to?
A: 100
Problem: Please answer a question about the following article about PlayStation 3:
Critical and commercial reception to PS3 improved over time, after a series of price revisions, Blu-ray's victory over HD DVD, and the release of several well received titles. Ars Technica's original launch review gave PS3 only a 6/10, but second review of the console in June 2008 rated it a 9/10. In September 2009, IGN named PlayStation 3 the 15th best gaming console of all time, behind both of its competitors: Wii (10th) and Xbox 360 (6th). However, PS3 has won IGN's "Console Showdown"based on which console offers the best selection of games released during each yearin three of the four years since it began (2008, 2009 and 2011, with Xbox winning in 2010). IGN judged PlayStation 3 to have the best game line-up of 2008, based on their review scores in comparison to those of Wii and Xbox 360. In a comparison piece by PC mag's Will Greenwald in June 2012, PS3 was selected as an overall better console compared to Xbox 360. Pocket-lint said of the console "The PS3 has always been a brilliant games console," and that "For now, this is just about the best media device for the money."
Where did IGN place the PS3 on their 2009 list of the best video game consoles ever?
A:
15th