Given a question and a context passage, generate the answer having the word or phrase from the context passage. Here, the answer should be a shortest continous span from the passage.

Ex Input:
Context: A physical change in matter is a change in one or more of matters physical properties. Glass breaking is just one example of a physical change. Some other examples are shown in Figure 3.16 and in the video below. In each example, matter may look different after the change occurs, but its still the same substance with the same chemical properties. For example, smaller pieces of wood have the ability to burn just as larger logs do. MEDIA Click image to the left or use the URL below. URL: Because the type of matter remains the same with physical changes, the changes are often easy to undo. For example, braided hair can be unbraided again. Melted chocolate can be put in a fridge to re-harden. Dissolving salt in water is also a physical change. How do you think you could undo it? Did you ever make a "volcano," like the one in Figure 3.17, using baking soda and vinegar? What happens when the two substances combine? They produce an eruption of foamy bubbles. This happens because of a chemical change. A chemical change occurs when matter changes chemically into an entirely different substance with different chemical properties. When vinegar and baking soda combine, they form carbon dioxide, a gas that causes the bubbles. Its the same gas that gives soft drinks their fizz. Not all chemical changes are as dramatic as this "volcano." Some are slower and less obvious. Figure 3.18 and the video below show other examples of chemical changes. MEDIA Click image to the left or use the URL below. URL: How can you tell whether a chemical change has occurred? Often, there are clues. Several are demonstrated in Figures 3.17 and 3.18 and in the video below. MEDIA Click image to the left or use the URL below. URL: To decide whether a chemical change has occurred, look for these signs: Gas bubbles are released. (Example: Baking soda and vinegar mix and produce bubbles.) Something changes color. (Example: Leaves turn from green to other colors.) An odor is produced. (Example: Logs burn and smell smoky.) A solid comes out of a solution. (Example: Eggs cook and a white solid comes out of the clear liquid part of the egg.) Because chemical changes produce new substances, they often cannot be undone. For example, you cant change a fried egg back to a raw egg. Some chemical changes can be reversed, but only by other chemical changes. For example, to undo the tarnish on copper pennies, you can place 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. If you build a campfire, like the one in Figure 3.19, you start with a large stack of sticks and logs. As the fire burns, the stack slowly shrinks. By the end of the evening, all thats left is a small pile of ashes. What happened to the matter that you started with? Was it destroyed by the flames? It may seem that way, but in fact, the same amount of matter still exists. The wood changed not only to ashes but also to carbon dioxide, water vapor, and other gases. The gases floated off into the air, leaving behind just the ashes. Assume you had measured the mass of the wood before you burned it. Assume you had also trapped the gases released by the burning wood and measured their mass and the mass of the ashes. What would you find? The ashes and gases combined have the same mass as the wood you started with. This example illustrates the law of conservation of mass. The law states that matter cannot be created or destroyed. Even when matter goes through physical or chemical changes, the total mass of matter always remains the same. (In the chapter Nuclear Chemistry, you will learn about nuclear reactions, in which mass is converted into energy. But other than that, the law of conservation of mass holds 
 Question: After a physical change, matter may

Ex Output:
look different.


Ex Input:
Context: The film opens with Soichi Negishi (Kenichi Matsuama) walking along side his mother to a small country train station. Negishi hopes to move to Japan, and realize his musical dreams, as a pop singer. As he rides away in the train, he sees his younger brother wave to him from a field.Now we are taken to a dark alleyway, where many alternative Japanese youths are entering a club called "Hell's Gate." Inside we see a death metal band(in rather flamboyant attire, and black and white make-up) preforming for a large crowd. This band, is Detroit Metal City. The singer, is then revealed to be Negashi, and why crowd surfing he narrates of his dislike of what he has become.The opening credits roll.We now see Negashi removing his makeup with a rag, and talking a fellow band mate, which is his lazy, bloomer obsessed drummer Terumichi Nishida . He begs Nishida to return a video-game he had let him borrow, out of fear of him losing it. Now the band's bassist Masayuki Wada speaks to Negashi about how well he believed the show had done.The dressing room door bursts open, and with a wild laugh the President Of Death Records(who also seems to be the band's manager) enters, and tosses a cigarette into a ash tray that Wada held, but it simply bounced out and went out of frame. She told them of how well they did, but in remorse Negashi played for her a tape of the pop music he wishes to make. Displeased, she kicked him.Now with a swollen mouth, Negashi leaves the dressing room in his normal attire, and pushes his way through the crowd of oblivious screaming fans, hoping to get a look at the band. He is hit, and begins to bleed from the nose. As he made his way up the stairs, he heard the fans talk of rumors they had heard about the lead singer Krauser, such as his ability to rape many women.Negashi is now on the street, and he is playing his pop music on an acoustic guitar, with people only stoping to glance at him, and then walk away. He stops playing and hears some pop music being played around the corner. As he goes to investigate he sees that the lead singer of the band was an old college friend, and then that a woman standing near him was his college crush Yuri Aikawa.He reflects on the old days, of them all sitting around playing music together, and of his quote "No music, No dream."He is soon at a record store, looking at the latest fashionable cd covers, when he sees Aikawa, and they began to chat, and make plans to meet later at a cafe. Then a blast of near-by music startles him, and he walks to the next isle to investigate. Several DMC fans had gathered to celebrate the release of a new single with head-banging, and loud music. Negashi dislikes the album cover, and complains about a quote that was in his name, that he never said. Aikawa then tells him of her distaste for metal, and how unfashionable she finds Detroit Metal City.Negashi is now in full attire with his band, doing an interview about the new single. His mind is off daydreaming about Aikawa when he realizes it is time for their date and he runs out of the interview to meet her. Negashi is now constantly going back and forth between the date, and the interview, each time forgetting to remove more and more of his DMC attire. With a feeling that negashi was going into the near-by club, she enters in hopes of finding him, but meets Krauser crowd surfing. Negashi in fear, tries to get the crowd to move him away from her, but the get him closer and closer, until he felt his wig began to slip off. The only thing he could do to cover himself, was to lift up her dress, showing her underwear. She calls him a pig, and walks out.Now Negashi is outside of a cafe, and is banging on the wall in 
 Question: Who is he in stage costume?

Ex Output:
krauser


Ex Input:
Context: Baby Smurf (original French title: Le Bebe Schtroumpf) is the twelfth album of the original French-language Smurfs comic series created by Belgian artist Peyo. 
 Question: Who is the illustrator of Baby Smurf?

Ex Output:

peyo