Here is a question about this article: Verdigris is made by placing a plate or blade of copper, brass or bronze, slightly warmed, into a vat of fermenting wine, leaving it there for several weeks, and then scraping off and drying the green powder that forms on the metal. The process of making verdigris was described in ancient times by Pliny. It was used by the Romans in the murals of Pompeii, and in Celtic medieval manuscripts as early as the 5th century AD. It produced a blue-green which no other pigment could imitate, but it had drawbacks; it was unstable, it could not resist dampness, it did not mix well with other colors, it could ruin other colors with which it came into contact., and it was toxic. Leonardo da Vinci, in his treatise on painting, warned artists not to use it. It was widely used in miniature paintings in Europe and Persia in the 16th and 17th centuries. Its use largely ended in the late 19th century, when it was replaced by the safer and more stable chrome green. Viridian, also called chrome green, is a pigment made with chromium oxide dihydrate, was patented in 1859. It became popular with painters, since, unlike other synthetic greens, it was stable and not toxic. Vincent van Gogh used it, along with Prussian blue, to create a dark blue sky with a greenish tint in his painting Cafe terrace at night.
What is the answer to this question: In what city did the Romans use verdigris in murals?
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So... Pompeii


The problem: Answer a question about this article:
The Odrysian Kingdom was a union of Thracian tribes under the kings of the powerful Odrysian tribe centered around the region of Thrace. Various parts of Thrace were under Macedonian rule under Philip II of Macedon, Alexander the Great, Lysimachus, Ptolemy II, and Philip V but were also often ruled by their own kings. The Thracians and Agrianes were widely used by Alexander as peltasts and light cavalry, forming about one fifth of his army. The Diadochi also used Thracian mercenaries in their armies and they were also used as colonists. The Odrysians used Greek as the language of administration and of the nobility. The nobility also adopted Greek fashions in dress, ornament and military equipment, spreading it to the other tribes. Thracian kings were among the first to be Hellenized.
Which kings wre among the first to be Hellenized?
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The answer: Thracian


Problem: Please answer a question about the following article about Queen (band):
The album also featured the hit single "Bohemian Rhapsody", which was number one in the UK for nine weeks. Mercury's close friend and advisor, Capital London radio DJ Kenny Everett, played a pivotal role in giving the single exposure. It is the third-best-selling single of all time in the UK, surpassed only by Band Aid's "Do They Know It's Christmas?" and Elton John's "Candle in the Wind 1997", and is the best-selling commercial single in the UK. It also reached number nine in the United States (a 1992 re-release reached number two on the Billboard Hot 100 for five weeks). It is the only single ever to sell a million copies on two separate occasions, and became the Christmas number one twice in the UK, the only single ever to do so. "Bohemian Rhapsody" has been voted numerous times the greatest song of all time. The band decided to make a video to help go with the single and hired Trilion, a subsidiary of the former management company Trident Studios, using new technology to create the video; the result is generally considered to have been the first "true" music video ever produced, and popularised the medium. The album's first track "Death on Two Legs" is said to be written by Mercury about Norman Sheffield and the former management at Trident who helped make the video so popular. Although other bands, including the Beatles, had made short promotional films or videos of songs prior to this, generally, those were specifically made to be aired on specific television shows. On the impact of "Bohemian Rhapsody", Rolling Stone states: "Its influence cannot be overstated, practically inventing the music video seven years before MTV went on the air." The second single from the album, "You're My Best Friend", the second song composed by John Deacon, and his first single, peaked at number sixteen in the United States and went on to become a worldwide Top Ten hit. The band's A Night at the Opera Tour began in November 1975, and covered Europe, the United States, Japan, and Australia.
What is the third best selling single of all time in the UK?
A: Bohemian Rhapsody


Question: Read this and answer the question

Over 50% of undergraduate students live on campus. Most of the residence halls on campus are located on the South 40, named because of its adjacent location on the south side of the Danforth Campus and its size of 40 acres (160,000 m2). It is the location of all the freshman buildings as well as several upperclassman buildings, which are set up in the traditional residential college system. All of the residential halls are co-ed. The South 40 is organized as a pedestrian-friendly environment wherein residences surround a central recreational lawn known as the Swamp. Bear's Den (the largest dining hall on campus), the Habif Health and Wellness Center (Student Health Services), the Residential Life Office, University Police Headquarters, various student-owned businesses (e.g. the laundry service, Wash U Wash), and the baseball, softball, and intramural fields are also located on the South 40.

What percent of undergraduate students live on campus at Washington University?
Answer: Over 50%


Problem: The Tower has been inextricably linked with the Everton area since its construction in 1787. It was originally used as a bridewell to incarcerate mainly drunks and minor criminals, and it still stands today on Everton Brow in Netherfield Road. The tower was accompanied by two laurel wreaths on either side and, according to the College of Arms in London, Kelly chose to include the laurels as they were the sign of winners. The crest was accompanied by the club motto, "Nil Satis Nisi Optimum", meaning "Nothing but the best is good enough".
What is the Everton club motto?
The answer is the following: Nil Satis Nisi Optimum


Input: Article: New Delhi is home to Indira Gandhi Memorial Museum, National Gallery of Modern Art, National Museum of Natural History, National Rail Museum, National Handicrafts and Handlooms Museum, National Philatelic Museum, Nehru Planetarium, Shankar's International Dolls Museum. and Supreme Court of India Museum.

Now answer this question: What is the name of the major railroad related museum located in New Delhi?

Output:
National Rail Museum