*Question*
Article: Hippos have always attracted people's interest. Modern hippos in Walt Disney movies can dance lightly. A stone hippo in a 13th-century church in France has wings. And in ancient Egyptian fairy tales, the hippo was a goddess that guided the dead to the afterworld. Despite their popular appeal, hippos, as well as other animals, have difficulty when their needs conflict with those of humans. The early Egyptians liked to hunt hippos for their teeth and because they were dangerous animals. Amulets to protect babies from demons were made from hippo bones. About 4,000 years ago, there were so many hippos in Egypt that they caused serious crop damage. Egyptian farmers killed them routinely, and by the beginning of the 19th century, all the hippos in Africa had been killed. People used to see hippos fight in the arenas of ancient Rome. After the fall of the Roman Empire, hippos weren't seen in Europe again until a few zoos began to exhibit them in the mid 1800s. All the various uses and abuses of hippos through the centuries have made their population fall greatly. Where they do occur, mostly in national parks, they live in such high density that they make the grasslands bare. This causes other grass-eating animals to go farther for food, and hippos, which can't live far from water, destroy their own feeding grounds. Question: What problems do hippos lead to? Yes or no, is the answer "They eat up the grass in their habitats."?
**Answer**
Yes

*Question*
Article: Teachers of Physics Needed for (be Middle School in Kent Start date: Sept. 1st,2014 Hours; Full Time Are you skilled in teaching physics? If yes, come and join us! This school follows the idea that learning is joyful. It offers a friendly and supportive environment for its teachers and students. The primary concern is to train students' creative ability. Students enjoy benefit from positive relationships with the staff. Requirements: Patience with students. --Ability to inspire students. --Experience in teaching physics. Excellent knowledge of physics. Please Note: What is basic for this post is a teacher's certificate ! To apply or find more information, please consult our secretary Helen Brown. Office Tel. 0800-22-829. Question: If you are interested in this job,you may . Yes or no, is the answer "call the secretary's office"?
**Answer**
No

*Question*
Article: Music is often thought of as "easy" or "play time", but it's not that at all. Music plays a very important part in our education. Students who learn music learn a lot of music history at school. This includes "modes ",which were used in churches during the development of music. They are still used today. Students learn about the historical events that were taking place when the music they play was written. They learn what the music was used for. So much of our culture is in music and has been for centuries. Music also helps with science. Students use science to help them discover what sounds good together and what doesn't. Students also need science to understand something called the "overtone series", which is about how music is produced by vibration and why. Students learn a lot about languages. Many songs are written in other languages, including ancient ones. Students must learn to translate these works to understand what they are singing about. Some songs are famous poems or short works set to music. Students learn a huge amount of coordination through music, so parts of the body can work better together. Students must use fine motor skills in order to play an instrument. Singers and players must learn breath control and be in good shape to play. Students learn about art. Some famous pieces were written about important works of art, and students learn about the artists and styles as they're playing the music. Music education also brings higher thinking to our children. It allows them to think about complex patterns (How can I make my part sound better?How do this music and these different parts fit together?). Students have to know absolutely what every other musician does at all times. In that way, it develops teamwork. As one can see, music is very important to education besides bringing us fun. Question: Learning music is helpful to the following subjects EXCEPT _ . Yes or no, is the answer "politics"?
**Answer**
Yes

*Question*
Article: Most people know precious gemstones by their appearances. An emerald flashes deep green, a ruby seems to hold a red fire inside, and a diamond shines like a star. It's more difficult to tell where the gem was mined, since a diamond from Australia or Arkansas may appear the same to one from the Democratic Republic of the Congo. However, recently, a team of scientists has found a way to identify a gemstone's origin. Beneath the surface of a gemstone, on the tiny level of atoms and molecules , lie clues to its origin. At this year's meeting of the Geological Society of America in Minneapolis, Catherine McManus reported on a technique that uses lasers to clarify these clues and identify a stone's homeland. McManus directs scientific research at Materialytics, in Killeen, Texas. The company is developing the technique. "With enough data, we could identify which country, which mining place, even the individual mine a gemstone comes from," McManus told Science News. Some gemstones, including many diamonds, come from war-torn countries. Sales of those "blood minerals" may encourage violent civil wars where innocent people are injured or killed. In an effort to reduce the trade in blood minerals, the U.S. government passed law in July 2010 that requires companies that sell gemstones to determine the origins of their stones. To figure out where gemstones come from, McManus and her team focus a powerful laser on a small sample of the gemstone. The technique is called laser-induced breakdown spectroscopy. Just as heat can turn ice into water or water into steam, energy from the laser changes the state of matter of the stone. The laser changes a miniscule part of the gemstone into plasma, a gas state of matter in which tiny particles called electrons separate from atoms. The plasma, which is superhot, produces a light pattern. (The science of analyzing this kind of light pattern is called spectroscopy.) Different elements produce different patterns, but McManus and her team say that gemstones from the same area... Question: Why did the U.S. government pass law that requires companies selling gemstones to determine the origins of their stones? Yes or no, is the answer "To reduce the trade in blood minerals."?
**Answer**
No