Problem: Density is also an important physical property of matter. The concept of density combines what we know about an objects mass and volume. Density reflects how closely packed the particles of matter are. When particles are packed together more tightly, matter is more dense. Differences in density of matter explain many phenomena. It explains why helium balloons rise. It explains why currents such as the Gulf Stream flow through the oceans. It explains why some things float in or sink. You can see this in action by pouring vegetable oil into water. You can see a colorful demonstration in this video.

Question: "Based on the explanation in the article, why do you expect to happen with the water and oil?"

Answer: "They will mix easily"

OPTIONS:
- no
- yes
Answer: no

Question:
Juzo Murasaki arrives at a work construction area to take on his new job as a construction worker . To his quiet dismay , his supervising boss turns out to be Toru Akai , who with his gang had made Juzo's middle school life a living hell . Akai , however , does n't recognize Juzo . Juzo's more disconcerted when he discovers that Akai lives with his wife , Nozomi Akai and their toddler son above Juzo's new apartment . As Juzo emotionally struggles to handle these unexpected developments , a mysterious and seemingly malicious hooded figure appears . It calls itself Number 13 . As Juzo attempts to control increasing number of flashbacks and a spiral fall into psychological darkness , Akai constantly picks on Juzo and other work colleagues including Seki Hajime , a former middle school student who becomes Juzo's casual friend in spite of Juzo's anti-social tendencies , at work . Meanwhile Akai's wife , Nozomi , attempts to make friends with Juzo and entrusting the care of her toddler son to Juzo . She proudly shows Juzo her husband's school photos . In one class photo , Juzo's space is marked with an X to show he was absent . Juzo suffers a severe flashback to explain his absence that day : in their school's science room , Akai and his friends have thrown acid at Juzo's face . Seki becomes suspicious about Juzo's increasingly odd behavior and goes to inform Arai at the work site , but Arai dismisses him without giving him a chance to speak . During this incident , Seki does n't realize he's being watched by Number 13 , but as soon as he does , Number 13 kills him . After reading the above, is "Yes" the correct answer to the question "Is Juzo social and is he happy to meet work mates from his former school?"? OPTIONS:
- no
- yes

Answer:
no

Input: Gravitational Potential Energy is affected by position. Like the leaves on trees, anything that is raised up has the potential to fall. It has potential energy. You can see examples of people with gravitational potential energy in 1.5 Figure below. Gravitational potential energy depends on two things. It depends on its weight, because a large falling rock can do more damage than a leaf falling from a tree. It also depends on its height above the ground. Like the skateboarder, the higher the ramp, the faster he will be going when he reaches the bottom. Like all energy, gravitational potential energy has the ability to do work. In this case, weight has the potential to deliver a force. More important for us is that it has the ability to cause change. What kind of change you may ask? Gravitational potential energy has the ability to cause motion.
"What does gravitational potential energy depend on?" is "Height and volume of the object"?

OPTIONS:
- no
- yes
Output: no

Input: Tocqueville thought the conquest of Algeria was important for two reasons: first, his understanding of the international situation and France's position in the world, and, second, changes in French society. Tocqueville believed that war and colonization would "restore national pride, threatened", he believed, by "The gradual softening of social mores" in the middle classes. Their taste for "material pleasures" was spreading to the whole of society, giving it "an example of weakness and egotism". Applauding the methods of General Bugeaud, Tocqueville went so far to claim that "war in Africa is a science. Everyone is familiar with its rules and everyone can apply those rules with almost complete certainty of success. One of the greatest services that Field Marshal Bugeaud has rendered his country is to have spread, perfected and made everyone aware of this new science." Tocqueville advocated racial segregation in Algeria with two distinct legislations, one for European colonists and one for the Arab population. Such a two-tier arrangement would be fully realised with the 1870 Cremieux decree and the Indigenousness Code, which extended French citizenship to European settlers and Algerian Jews, whereas Muslim Algerians would be governed by Muslim law and restricted to a second-class citizenship.

Does the response "The conquest and colonization of Algeria" correctly answer the question "What did Tocqueville believe would restore national pride in France?"?

OPTIONS:
- no
- yes
***
Output: yes

For thousands of years, people have found fossils. The fossils caused curiosity about Earths past. How did these organisms live? What type of world did they live in? Fossils can tell us a lot about Earths history. In ancient times, fossils inspired myths and stories. These stories included tales of monsters and other incredible creatures. What type of creature do you know that could inspire such stories? Of course, dinosaur fossils were once mistaken for dragons bones. Two thousand years ago, people discovered fossils in China. At the time, they were thought to be dragon bones. We know now that these were not bones, but fossils. So what is the difference?

Question: "How long have people been finding fossils and what did they inspire?"

OPTIONS:
- no
- yes

Answer: "200, inspird them with music"

Response: no

Input: 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.
"What are the reasons land is cleared?" is "Dogs"?

OPTIONS:
- no
- yes
Output:
no