Article: 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.

Question: Which Queen song was number one on the UK charts for nine weeks?
Ans: Bohemian Rhapsody


Article: Furthermore, the amount of time adolescents spend on work and leisure activities varies greatly by culture as a result of cultural norms and expectations, as well as various socioeconomic factors. American teenagers spend less time in school or working and more time on leisure activities—which include playing sports, socializing, and caring for their appearance—than do adolescents in many other countries. These differences may be influenced by cultural values of education and the amount of responsibility adolescents are expected to assume in their family or community.

Question: Does the amount of time adolescents spend on work and leisure vary from culture to culture or reman relatively constant?
Ans: varies greatly


Article: Orontid Armenia formally passed to empire of Alexander the Great following his conquest of Persia. Alexander appointed an Orontid named Mithranes to govern Armenia. Armenia later became a vassal state of the Seleucid Empire, but it maintained a considerable degree of autonomy, retaining its native rulers. Towards the end 212 BC the country was divided into two kingdoms, Greater Armenia and Armenia Sophene including Commagene or Armenia Minor. The kingdoms became so independent from Seleucid control that Antiochus III the Great waged war on them during his reign and replaced their rulers.

Question: What year did Armenia split into Greater Armenia and Armenia Sophene?
Ans: 212 BC


Article: Phytochemistry is a branch of plant biochemistry primarily concerned with the chemical substances produced by plants during secondary metabolism. Some of these compounds are toxins such as the alkaloid coniine from hemlock. Others, such as the essential oils peppermint oil and lemon oil are useful for their aroma, as flavourings and spices (e.g., capsaicin), and in medicine as pharmaceuticals as in opium from opium poppies. Many medicinal and recreational drugs, such as tetrahydrocannabinol (active ingredient in cannabis), caffeine, morphine and nicotine come directly from plants. Others are simple derivatives of botanical natural products. For example, the pain killer aspirin is the acetyl ester of salicylic acid, originally isolated from the bark of willow trees, and a wide range of opiate painkillers like heroin are obtained by chemical modification of morphine obtained from the opium poppy. Popular stimulants come from plants, such as caffeine from coffee, tea and chocolate, and nicotine from tobacco. Most alcoholic beverages come from fermentation of carbohydrate-rich plant products such as barley (beer), rice (sake) and grapes (wine).

Question: Where does morphine come from?
Ans:
the opium poppy