instruction:
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.
question:
Context: In the county, the population was spread out with 23.5% under the age of 18, 7.8% from 18 to 24, 28.5% from 25 to 44, 25.9% from 45 to 64, and 14.2% who were 65 years of age or older. The median age was 40 years. For every 100 females, there were 93.8 males. For every 100 females age 18 and over, there were 90.5 males. 
 Question: Which age group is smaller: 25 to 44 or 45 to 64?
answer:
45 to 64


question:
Context: Its been over a year since the Alaskan town of Barrow's population was decimated by a gang of vampires during its annual month long sunset. Riddled with grief over the death of her husband, bound by nightmares and void of all emotions beyond hate and sorrow, Stella (Kiele Sanchez) has spent the past months traveling the world, trying to convince others that vampires exist in this world.Constantly feeling as though she is being hunted, Stella is well aware the impending threat on her life, the death of her husband Eben having taken from her her ability to feel emotions, leaving her feeling cold and empty inside. Following instructions from a mysterious man named Dane, she eventually ends up in Los Angeles.One night, while giving a lecture to an audience of people with whom she hopes to convince that vampires exist and aware that they attend when she speaks, she activates overhead ultraviolet lamps that incinerate several of the vampires in the audience before the humans. She is quickly arrested and harassed by a man named FBI Agent Norris whom she quickly learns that he is a 'familiar' (bug-eater) one of the many thousands of human followers of the vampires all over the world, placed to keep their activities covered up. After they release her from custody with a warning to keep quiet about the existence of vampires, she returns to her hotel room to find three people waiting for her; Paul (Rhys Coiro), Amber (Diora Baird) and Todd (Harold Perrineau) who had been sent by Dane to collect her in order to hunt down the vampire queen Lilith, whom they are convinced once out of the way, the vampires will fall into more-or-less form of dormancy as she is responsible for their every move and for keeping them hidden, when Stella asks if she is responsible for the incident at Barrow and is notified that she was. She is taken to meet Dane (Ben Cotton) and is shocked to discover that he too is a vampire, though due to a superficially inflicted wound he has maintained a grasp of humanity, only drinking blood from packaged hospital stocks he keeps.At first hesitant to join in on a plan to attack a vampire nest, Paul eventually convinces Stella to join them, telling her of his daughter being killed by one and his accusations of a vampire killing her resulting in a divorce with his wife.The following day, the four of them find their way to a vampire's nest and they are ambushed by a group of them. In the attempt to flee, Todd is bitten and turns after they lock themselves in a cellar room. When Paul hesitates, Stella manages to kill him by smashing in his head with a cinder block. They decide to wait for night when the vampires go out to feed in order to make their escape.After night falls, Dane comes and frees them, on their way out they capture a vampire. Taking him back to their base of operations, Dane interrogates the non-English speaking animalistic vamp with ultraviolet lamps, eventually following him back to another nest. They invade the nest and rescue a human they were using as a feeding station and with her memories of Lilith's lair aboard one of the ships on the bay they are able to plan an attack on her directly.At Dane's place, Stella and Paul get intimate and have sex. Meanwhile, Lilith (Mia Kirshner) decides that Agent Norris should prove his worth to become a vampire (in order to cure throat or lung cancer he has been suffering from) and he bites the neck of a captive girl, named Stacey (Katharine Isabelle), drinking her blood until dead. Afterward she turns him to hunt Stella and the others.Dane is killed when Norris arrives, and the others flee with the survivor from the nest, they travel to a boat yard and Jennifer points out the boat that they are set to sail to Alaska in for another 30 day feeding period. They tell Jennifer to leave and the three of them stowaway on the ship and discover that vampires can be resurrected after death if their corpses are fed human blood. They eventually confront the human captain who says 
 Question: Who is the vampire queen?
answer:
lilith


question:
Context: We need natural resources for just about everything we do. We need them for food and clothing, for building materials and energy. We even need them to have fun. Table 20.1 gives examples of how we use natural resources. Can you think of other ways we use natural resources? Use Vehicles Resources Rubber for tires from rubber trees Steel frames and other metal parts from minerals such as iron Example iron ore Use Electronics Resources Plastic cases from petroleum prod- ucts Glass screens from minerals such as lead Example lead ore Homes Nails from minerals such as iron Timber from trees spruce timber Jewelry Gemstones such as diamonds Minerals such as silver silver ore Food Sunlight, water, and soil Minerals such as phosphorus corn seeds in soil Clothing Wool from sheep Cotton from cotton plants cotton plants Recreation Water for boating and swimming Forests for hiking and camping pine forest Some natural resources are renewable. Others are not. It depends in part on how we use them. Renewable resources can be renewed as they are used. An example is timber, which comes from trees. New trees can be planted to replace those that are cut down. Sunlight is a renewable resource. It seems we will never run out of that! Just because a resource is renewable, it doesnt mean we should use it carelessly. If we arent careful, we can pollute resources. Then they may no longer be fit for use. Water is one example. If we pollute a water source it may not be usable for drinking, bathing or any other type of use. We can also overuse resources that should be renewable. In this case the resources may not be able to recover. For example, fish are renewable resources. Thats because they can reproduce and make more fish. But water pollution and overfishing can cause them to die out if their population becomes too low. Figure 20.1 shows another example. Some resources cant be renewed. At least, they cant be renewed fast enough to keep up with use. Fossil fuels are examples. It takes millions of years for them to form. We are using them up much more quickly. Elements that are used to produce nuclear power are other examples. They include uranium. This element is already rare. Sooner or later, it will run out. Supplies of non-renewable resources are shrinking. This makes them harder to get. Oil is a good example. Oil reserves beneath land are running out. So oil companies have started to drill for oil far out in the ocean. This costs more money. Its also more dangerous. Figure 20.2 shows an oil rig that exploded in 2010. The explosion killed 11 people. Millions of barrels of oil spilled into the water. It took months to plug the leak. Rich nations use more natural resources than poor nations. In fact, the richest 20 percent of people use 85 percent of the worlds resources. What about the poorest 20 percent of people? They use only 1 percent of the worlds resources. You can see this unequal distribution of oil resources in Figure 20.3. Imagine a world in which everybody had equal access to resources. Some people would have fewer resources than they do now. But many people would have more. In the real world, the difference between rich and poor just keeps growing. Every 20 minutes, the human population adds 3,500 more people. More people need more resources. For example, we now use five times more fossil fuels than we did in 1970. The human population is expected to increase for at least 40 years. What will happen to resource use? How can we protect Earths natural resources? One answer is conservation. This means saving resources. We need to save resources so some will be left for the future. We also need to protect resources from pollution and overuse. When we conserve resources, we also cut down on the trash we produce. Americans throw out 340 million tons of trash each year. We throw out 2.5 million plastic bottles alone every hour! Most of what we throw out ends up in landfills. You can see a landfill in Figure 20.4. In a landfill, all those plastic bottles take hundreds of 
 Question: any natural resource that will not run out if we use it wisely
answer:

renewable resource