Input: 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.

Does the response "yelling in a vacuum" correctly answer the question "How did Robert Boyle prove the properties of sound waves?"?
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Output: no

Input: Life for the partners of Cates, Katalinic & Lund holds little of the glamour one might expect from a career in law. Instead of lunches at Lutce, they caucus at the Palace Diner in Queens. Wooing clients means passing out fliers on street corners, not securing box seats at Madison Square Garden. To make ends meet, one partner stacks pipe and cleans the yard at a plumbing warehouse. Another handles urine samples in a hospital lab. A sign of failure, of a feeble economy, perhaps? Hardly. They are heeding the call of a growing pool of law schools, which are for the first time pointing graduates in a new direction and teaching them how to get there. Forget the lure of large firms, the security of a government post. Here is how to grapple "in the service of justice," as many of the schools put it, instead. Convinced that corporate largess and government programs barely dent the nation's legal needs, the law schools are urging graduates to buck tradition, pass up big salaries and ignore mushrooming student debt to join tiny neighborhood practices or simply start their own, all with an eye toward charging no more than their clients can afford. This is not pro bono legal work; it is "low bono," a term the schools coined to define the atypical kind of law career they are training students for. While its practitioners do charge for their services, they are also dead set on turning no one away - or at least as few as possible. "When you go into this kind of social justice law, it's really brutal and you're almost guaranteed to struggle for a couple of years before there's a light at the end of the tunnel," said Fred Rooney, director of the Community Legal Resource Network at City University of New York School of Law, from which the lawyers of the newly formed Cates, Katalinic & Lund graduated last May. "But if our graduates don't do it, the millions of people who cannot access justice in this country will continue to soar." The movement, primly called the consortium, started four years ago by CUNY, Northeastern University, the University of Maryland and St. Mary's Law School in Texas. (St. Mary's later dropped out.) Since then, it has drawn seven additional law schools to its ranks: the University of Michigan, Rutgers and Syracuse Law Schools, New York Law School, University of New Mexico School of Law, Thomas M. Cooley Law School and Touro Law School. It has elicited at least initial interest from 19 more.

Does the response "Almost guaranteed to struggle for a couple of years" correctly answer the question "Do the lawyers practicing "low bono" work struggle and take side jobs?"?
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Output: yes

Input: 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.

Does the response "It explains many phenomena" correctly answer the question "Why is density important?"?
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Output: yes

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.

Does the response "Prairies" correctly answer the question "What types of land have been lost to agriculture?"?
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Output:
yes