Input: Have you are burned something on the stove or in the oven? Do you know why things burn? It all has to do with temperature. Changes in matter are affected by temperature. For example, what if you place a cake in the oven and you leave it in too long? What do you think will happen? Thats right, it will probably burn. The same thing will happen if the oven setting is too high and you apply too much heat. In either case, heat has affected the rate of change in matter. Its probably obvious that when the temperature is increased a chemical change, like cooking, will occur faster. What about a physical change? Are physical changes affected by temperature? Most of us have seen steam rising off a wet road after a summer rainstorm. This happens because the road surface is very warm. The warm road and warm air temperature causes the water to evaporate quickly. The liquid water is turning into water vapor, but it is still water. The evaporation of water is a physical change. So yes, temperature affects the rate that physical change occurs.

Does the response "Due to raise in temperature" correctly answer the question "Why do things burn?"?

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

Energy is stored in chemical compounds. This energy is called chemical energy. Chemical energy is a form of potential energy. When bonds between atoms are broken, energy is released. The wood in fireplaces has chemical energy. The energy is released as heat and light when the wood burns. Most living things get their energy from food. When food molecules are broken down, the energy is released. It may then be used to do work, like playing ball or studying science. If you have ever heard, "Eat a good breakfast", thats why. You need energy to do things during the day. To do those things you need energy. You get your energy from the food you eat. That energy is stored in your body until you need it. How did you get to school today? If you walked, you used chemical energy from the food you ate. What if you rode the bus or were driven in a car? Where did that energy come from?

Question: "Where do people get their energy"

OPTIONS:
- no
- yes

Answer: "Sleep"

Response: no

(CNN) -- Jo-Wilfried Tsonga ended Roger Federer's hopes of winning a record-equaling seventh Wimbledon title on Wednesday as the French 12th seed staged a stunning fightback to reach the semifinals. Federer appeared to be cruising into the last four after winning the first two sets, but Tsonga inflicted the Swiss world No. 3's first defeat from that vantage point in 179 grand slam matches. It was only the third time in the 29-year-old's glittering career that the 16-time grand slam champion had surrendered a two-set lead. Tsonga, ranked 19th in the world, triumphed 3-6 6-7 (3-7) 6-4 6-4 6-4 on Centre Court, serving out to love as he earned a clash with second seed Novak Djokovic. The Serbian, who beat Tsonga in the 2008 Australian Open final, ended the dream run of Australian 18-year-old Bernard Tomic. Tsonga defeated Federer for just the second time in six meetings, their first on grass. "It was amazing. I played unbelievable. It's never easy to come back against Roger. I'm so happy, it's crazy," the 26-year-old told reporters after reaching the semifinals at Wimbledon for the first time. "He's the biggest champion in the sport. He has achieved so much and is the best player in the world. To be two sets down and come back was unbelievable. I served really well. Against Djokovic I will have to come out and do the same again." Federer has now lost in the quarterfinals two years in a row, being beaten by eventual runner-up Tomas Berdych in 2010. "Jo played great. Really from start to finish I don't remember seeing a break point after I broke him in the first game," Federer said.

Question: "What tennis player surrendered a two-set lead for only the third time in his career?"

Response: "Jo-Winfried"
OPTIONS:
- no
- yes

A: no

Problem: Surely, you have noticed the tall poles along the roadside. Do you know what is on top of those poles? Thats right, wires that carry electric current. These wires carry electric current to your home. But what is electric current? Electric current is actually the flow of electrons. You may recall, an electron is the outer-most particle in an atom. They have a negative charge. Electricity is the continuous flow of these particles. Electrons are able to move through wires. Their speed can even be measured. The SI unit for electric current (or speed) is the ampere (A). Ampere is often shortened to amp. Electric current may flow in just one direction, or it may keep reversing direction. Direct current (DC) flows in only one direction. Direct current is what is used in devices like flashlights. Alternating current (AC) flows in two directions. This is the type of current that flows into your home through wires.

Question: "What are two types of electric current?"

Answer: "Direct Current and Alternating Current"

OPTIONS:
- no
- yes
Answer: yes

Catherine V. "Ginny" Kilgore of Oxford, an attorney with North Mississippi Rural Legal Services, has been recognized for her dedication to serving the indigent. Kilgore - who oversees delivering legal services to the disabled and elderly in 39 north Mississippi counties - is recipient of the University of Mississippi School of Law's 2002 Public Service Award. The award was announced recently at a dinne r, held in Kilgore's honor and hosted by law school Dean Samuel M. Davis, who presented her with an engraved plaque. "Ginny Kilgore is a public servant in the truest sense," said Davis. "Her selection continues the tradition of this award in recognizing those who have labored in the trenches, with little or no compensation but with great professional and personal satisfaction in helping to bring justice and equality to those who need it most." "This award means a great deal to me," Kilgore said, pointing to others so honored. "The work of those who received the award before me has been so important; I feel very honored." After earning bachelor's and master's degrees in education and a few years teaching, Kilgore enrolled at the UM law school. Upon graduation in 1975, she entered private law practice in Oxford, joining NMRLS in 1978. Since then, she has earned promotions from managing attorney, senior attorney, then director of the Council on Aging project. Since 1990, she has worked in the Administrative Law Unit and Resource Development, and directed the Elder Law Project, serving the northern half of the state. She also is an adjunct professor in the UM law school's Civil Law Clinic. She held a similar post a few years ago in the school's Elder Law Clinic. Kilgore says she's found her niche. "I've always thought it was important to do work to help people. I really enjoy it. The issues I've dealt with through the years have been on the side of helping people maintain the basics of life - home, healt h care, jobs and family." She says her desire to serve others was sparked early, growing up in a single-parent home, aware that her widowed mother faced certain challenges as she supported her four children through public school and college.

Question: "After her undergraduate and post-graduate degrees, where did Kilgore attend law school?"

Response: "MM Law School"
OPTIONS:
- no
- yes

A:
no