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.

Input: Consider 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

Output: look different.

Input: Consider Input: Context: Loosely based on the 1967 folk song by Bobbie Gentry, and set in the year 1953 in rural Mississippi, the film explores the budding relationship between 19-year-old Billy Joe McAllister (Robby Benson) and 16-year-old Bobbie Lee Hartley (Glynnis O'Connor) (who corresponds with the unnamed narrator of the original song), despite resistance from Hartley's family, who contend she is too young to date. Yet every day, after being dropped off by her school bus at the Tallahatchie Bridge over the Tallahatchie River which leads to the Hartley farm, Bobbie Lee slips away to a local sawmill where Billy Joe works just to hang out with him at the end of his shift.When Bobbie Lee and her father have a confrontation with three thugs driving a battered pick-up truck from a neighboring county across the state line in Alabama, they chase them to the Tallahatchie where they force their truck off the road which ends up dangling off the bridge. With Bobbie Lee's father unwilling to abandon his truck and abandon the precious eggs and cargo he is delivering to the local market, Bobbie Lee is forced to run several miles to the sawmill to ask Billy Joe, her brother and another employee to rescue her father and save his truck. This incident seem to bring Bobbie Lee and Billy Joe more close to each other.One night at a jamboree, Billy Joe gets drunk and seems nauseated and confused when entering a makeshift whorehouse behind the gathering. Later, Bobbie Lee finds out through the town grapevine that Billy Joe was accused of assaulting one of the prostitutes and is wanted for questioning.After disappearing for days, Billy Joe returns to bid an enigmatic goodbye to Bobbie Lee on the Tallahatchie Bridge. When she presents him with her childhood rag doll, he knocks it away from her and it falls into the river while the passing priest, Brother Taylor, sees from afar. After Billy Joe runs off, Bobbie Lee asks if everything is all right and Billy Joe then blurts out: "It ain't all right! I have been with a man... which is a sin against nature, a sin against God!" It is here where he confides in her that on the evening during the jamboree, in his inebriated state, he had sex with another man. Bobbie Lee is somewhat shaken but takes the news very calmly. Overcome with guilt over his homosexual encounter, Billy Joe subsequently kills himself by jumping off the Tallahatchie bridge the next day (off-camera).In the film's final scene, set a few days later after Billy Joe's funeral, Bobbie Lee meets Dewey Barksdale (James Best), Billy Joe's sawmill boss on the bridge as she is leaving town for a while, and he guiltily confesses to her that he was the man whom had sexual relations with Billy Joe that night. She tells Dewey, who is on his way to her house to confess to her father, that the town already falsely suspects that she is carrying Billy Joe's baby and that it would do no good for Dewey to confess now since he could go to prison for sodomy charges. Agreeing with the girl's logic, Dewey offers Bobbie Lee a ride to the bus station, which she courteously accepts.The rest of the story (and song) is history: "A year has come and gone since we heard the news about Billy Joe. Brother married Becky Thompson and they bought a store in Tupelo. There was a virus goin' around, Papa caught it and he died last spring. And now Mama doesn't wanna do much of anything. And me, I spend a lot of time picking flowers up on Choctaw Ridge and dropping 'em into the muddy waters off the Tallahatchie Bridge."
Question: At what event does Mccallister get drunk?

Output: a jamboree

Input: Consider Input: Context: The first year after birth is called infancy. Infancy is a period when the baby grows very fast. During infancy, the baby doubles in length and triples in weight. Other important changes also happen during infancy: The babys teeth start to come in, usually at about six months of age ( Figure 1.1). The baby starts smiling, paying attention to other people, and grabbing toys. The baby begins making babbling sounds. By the end of the first year, the baby is starting to say a few words, such as mama and dada. The baby learns to sit, crawl, and stand. By the end of the first year, the baby may be starting to walk. Childhood begins after the babys first birthday and continues until the teen years. Between one and three years of age, a child is called a toddler. During the toddler stage, growth is still fast, but not as fast as it was during infancy. A toddler learns many new words. The child even starts putting together words in simple sentences. Motor skills also develop quickly during this stage. By age three, most children can run and climb steps. They can hold crayons and scribble with them. They can also feed themselves and use the toilet. From age three until the teens, growth is slower. The body also changes shape. The arms and legs get longer compared to the trunk. Children continue to develop new motor skills. For example, many young children learn how to ride a tricycle and then a bicycle. Most also learn how to play games and sports ( Figure 1.2). By age six, children start losing their baby teeth. Their permanent teeth begin coming in to replace them. They also start school and learn how to read and write. They develop friendships and become less dependent on their parents. There are numerous milestones that occur during the first few years of childhood. These include the use of language, walking and running, understanding simple concepts, pretend play, the development of fine motor skills, the development of independence, Children develop better motor skills as they get older. having temper tantrums, demonstrating separation anxiety, becoming fully potty-trained, showing natural curiosity.
Question: during infancy, a baby
Output: doubles in length and triples in weight.