Input: Mechanical energy is a combination of the energy of motion or position. This type of energy describes objects that are moving or could move. A moving ball can have energy from motion. An arrow can also have the energy of motion. Both are types of mechanical energy. Can you think of some other examples? Where does the energy of motion come from? It comes from the energy created by position. This energy is stored energy. This means it is not moving yet, but it has the potential to move. How can you store energy? The arrow gains energy from the drawn bow. As the arrow is released, the bow releases its stored energy and puts the arrow into motion. Can you think of some other ways to store energy using position?

Does the response "Potential energy" correctly answer the question "What types of energy do a moving ball or flying arrow have?"?

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Output: no

Input: One day, Phoebe woke up and found that her house had been broken into. Her front door was wide open. She went into the living room and saw that her television set and stereo were missing. She checked the kitchen, but didn't find anything missing there except for a clock. Then she saw that her purse had been stolen too. She called the police to report what had happened. The police officer told her that there had been a lot of cases like this in her neighborhood lately, and they were looking for the criminals. Phoebe went into her bedroom and started to cry. She had no money to buy a new television set or stereo. She was scared that the robbers might try to break into her house again. She called her friend Mary and asked her what to do. Mary told Phoebe to change her front door lock right away. She said she knew a detective who could try to find the robber who had broken into her house. Phoebe thanked Mary, and said she felt safe knowing that there was someone who could help her catch the robber so he wouldn't do it again.

Does the response "She woke up and found her house had been broken into and her t.v set and radio along with a clock and her purse were missing" correctly answer the question "What made Phoebe cry?"?

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Output: yes

Input: Chemical changes produce new substances. For this reason, they often cannot be undone. Some chemical changes can be reversed, sort of. To do so requires another chemical change to take place. For example, you can undo the tarnish on copper pennies by placing them in vinegar. The acid in the vinegar reacts with the tarnish. This is a chemical change that makes the pennies bright and shiny again. You can try this yourself at home to see how well it works. Other chemical changes cannot be reversed at all or may be difficult to do. Rusting is a chemical change. If metal rusts, the best you can do is to sand off the rust to get down to the shiny metal. Although the metal may now be shiny, the rust was removed. The rust was not changed back into the original metal. Some chemical reactions occur in only one direction. These reactions are called irreversible reactions. For example, you cannot change a fried egg back into a raw egg. Can you think of some other irreversible reactions related to cooking? Would you like a piece of cake?

Does the response "placing pennies in vinegar" correctly answer the question "What can you do to make pennies bright and shiny again?"?

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Output: yes

Input: Thelma James was a prime candidate for a real estate ripoff: She is 68, has precious little money and can't read or write. "I won't lie to you. I was so-o-o excited," the widow and former duplex dweller said of the purchase of her first home, a sagging frame structure on Snowden. "I was glad to get me a house." When James realized she had been swindled she turned to Memphis Area Legal Services, which represented her in a lawsuit. Now, James's monthly house notes have dropped from $796 - more than twice her monthly income - to an affordable $247. Some of the people who took advantage of her through a questionable loan program were sent to jail. "I don't know what I would have done without Legal Services," said James. "They solved a lot of my problems." James is one of more than 3,000 clients served last year by MALS, which provides assistance for civil matters, such as domestic abuse and family-related problems, Social Security and Supplemental Security Income, veterans, housing and consumer fraud cases. Like James, most clients are elderly or female. Some are handicapped. Some need medical care or veteran's benefits. Some are trying to escape eviction or an abusive marriage. And 87 percent live at or below poverty level. Shelby County Mayor A C Wharton recently said Legal Services is important for those who, because of poverty or other struggles in life, think justice is an empty word. "They must be given reason to believe that the law is for them too," said Wharton, a former executive director of MALS. But MALS faces a funding crunch next year, brought on by a $200,000 shortfall from three revenue sources.

Does the response "Twice her monthly income" correctly answer the question "By how much was the Memphis Area Legal Services able to drop James' monthly house notes?"?

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- no
- yes
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Output:
no