Sound waves are mechanical waves. They can travel only through matter. They cannot travel through empty space. This was demonstrated in the 1600s by a scientist named Robert Boyle. Boyle placed a ticking clock in a sealed glass jar. The clock could be heard ticking through the air and glass of the jar. Then Boyle pumped the air out of the jar. The clock was still running, but the ticking could not be heard. Thats because the sound couldnt travel without air particles to transfer the sound energy. Is there any other place where sound cannot be heard? Here is a hint: is there any other place that does not have air molecules? Thats right, in space sound cannot be transferred. So can astronauts hear each other? Yes, they can, because they are in enclosed space stations or pressurized suits.In both cases, they are surrounded by air molecules. If they left their space ship and did not use their electronics, they would not be able to hear each other. Next time you watch a science fiction movie, think about this factoid. When spaceships are destroyed by hostile alien beings, there would be no sound heard. Sound waves can travel through many kinds of matter.

Question: "Who demonstrated that sound could not travel through empty space, but only matter?"

OPTIONS:
- no
- yes

Answer: "Aristotle"

Response: no

Before the establishment of the People's Republic, Albania's illiteracy rate was as high as 85%. Schools were scarce between World War I and World War II. When the People's Republic was established in 1945, the Party gave high priority to wiping out illiteracy. As part of a vast social campaign, anyone between the ages of 12 and 40 who could not read or write was mandated to attend classes to learn. By 1955, illiteracy was virtually eliminated among Albania's adult population. Today the overall literacy rate in Albania is 98.7%; the male literacy rate is 99.2% and female literacy rate is 98.3%. With large population movements in the 1990s to urban areas, the provision of education has undergone transformation as well. The University of Tirana is the oldest university in Albania, having been founded in October 1957.

Question: "When was illiteracy virtually eliminated among Albania's adult population?"

Response: "1955"
OPTIONS:
- no
- yes

A: yes

Problem: The Washington Supreme Court is asking the Legislature to approve a $90 surcharge on a court filing fee to help provide legal help for the poor in civil cases, Chief Justice Gerry Alexander said Wednesday. "Some might say, why should we support this when we face tough financial times?" Alexander asked in his State of the Judiciary address to a joint session of the Legislature. "It seems to me in America, where we rejoice in the fact that we are a nation devoted to the rule of law, we should not ration access to justice." The recommendation comes from the court's Task Force on Civil Equal Justice Funding, created in 2001 to look for ways to cope with the sparse amount of money available for such cases. As the task force was studying the issue, $900,000 was cut from state support for civil equal justice services. That prompted the state's two main legal services providers - Columbia Legal Services and Northwest Justice Project - to cut their staffs, Alexander said. The change would increase the cost of filing a lawsuit in Superior Court to $200. The total fee would be split, with 54 percent going to counties and 46 percent going to the state for a newly created equal justice account. Alexander also requested money for five additional Superior Court judgeships and one additional District Court judgeships, arguing that increased caseloads require more judges. Two of the Superior Court judges and the District Court judge would be in Clark County, with one Superior Court judge added in the joint district that serves Benton and Franklin counties and one each in Kittitas and Kitsap counties.

Question: "What prompted the state's two main legal services providers to cut their staffs?"

Answer: "The $800,000 cut"

OPTIONS:
- no
- yes
Answer: no

Question:
When land is cleared, habitats are lost. It may be cleared for agriculture. It may also be used for building new homes or businesses. Within the past 100 years, the amount of land used for agriculture has almost doubled. Land used for grazing cattle has more than doubled. Many wetlands have also been lost to agriculture. The U.S. has lost almost all the natural tall-grass prairies. Thee areas of tall thick grass have virtually disappeared. These areas of land had thick fertile soil. Their grasses had very deep root systems. These deep and thick roots reduced the amount of soil erosion. They also were home to many plants and animals. Prairies were wonderful places. They were home to colorful flowers, prairie dogs, and herds of bison. After reading the above, is "Iguanas, bull" the correct answer to the question "What types of animals did prairies contain?"? OPTIONS:
- no
- yes

Answer:
no

Input: Ratners Group PLC, a fast-growing, acquisition-minded London-based jeweler, raised its price for Seattle-based specialty jeweler Weisfield's Inc. to $57.50 a share, or $62.1 million, from $50 a share, or $55 million, after another concern said it would be prepared to outbid Ratners's initial offer. The other concern wasn't identified. Ratners's chairman, Gerald Ratner, said the deal remains of "substantial benefit to Ratners." In London at mid-afternoon yesterday, Ratners's shares were up 2 pence (1.26 cents), at 260 pence ($1.64). The sweetened offer has acceptances from more than 50% of Weisfield's shareholders, and it is scheduled for completion by Dec. 10. The acquisition of 87-store Weisfield's raises Ratners's U.S. presence to 450 stores. About 30% of Ratners's profit already is derived from the U.S.
"How many of Weisfield's stores are to be liquidated and acquired by Ratners by Dec. 10?" is "87"?

OPTIONS:
- no
- yes
Output: yes

How can you describe your location? You might use a familiar system. You might say, 'I live at 1234 Main Street, Springfield, Ohio.' You could also say, 'I live right behind the Elementary School.' This method uses the school as a point of reference. Another example is, I am at the corner of Maple Street and Main Street. Both streets may be a good reference for anyone living in your town. Scientists must be able to pinpoint a feature they are studying. Scientists use a special system to describe locations. They use latitude and longitude as a reference. Lines of latitude and longitude form a grid. You may have used a grid system while doing graphing. This grid is centered on a reference point. Zero latitude is the equator. Lines of latitude run east to west. They divide the Earth from North to South. Lines of longitude run from north to south. They divide the Earth from East to West. Zero longitude runs through Greenwich, England. You may have heard the term, Greenwich Mean Time, or GMT. The system of latitude and longitude works well for objects that do not move.

Question: "Lines of latitude running East to West divide the earth from?"

OPTIONS:
- no
- yes

Answer: "North to South"

Response:
yes