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: Today, nearly 400 animals are listed as threatened or endangered animals in the United States. Many are at risk of becoming extinct or disappearing permanently. Unless efforts to save these vulnerable animals succeed, many of the country's greatest creatures will be lost forever. From the facts listed, guess which animals are endangered. Click on the picture to find out more about each of these animals in trouble. American Crocodile *American crocodiles are about 12 feet long. They live on land and in shallow water, swamps and marshes. *American crocodiles like to float in the water with only their eyes and noses above the water surface. *American crocodiles eat mostly small animals, which they grab with their strong jaws and sharp teeth. *American crocodiles lay eggs. They hide their eggs under twigs and leaves, or bury them in the sand. *Some crocodiles help their young hatch, and then carry them to the water in their mouth. Habitat Southern Florida, Mexico, Central and South American, Caribbean islands. Why It's Endangered Overhunted for its skin and habitat destruction. Peninsular Bighorn Sheep *Bighorn sheep can weigh as much as 280 pounds and stand about 3 feet tall. *They live in dry, desert mountain ranges, near rocky cliffs. *Bighorn sheep eat grass, twigs and leaves. *Male sheep are called rams and can be recognized by their huge, brown horns. The horns curl back over the ears, down,and up past the cheeks. *They live in herds or groups. The male sheep with the biggest horns are usually in charge. Male horns can weigh as much as 30 pounds. *Males will use their massive horns to fight. The fights can last as long as 24 hours. *Females are called ewes. They are smaller than rams and have shorter, smaller horns. Habitat Nevada and California to west Texas and south into Mexico. Why It's Endangered Loss of habitat, hunting illegally, drought and disease. 
 Question: Where can we find both American crocodiles and Bighorn sheep according to the passage?
answer:
mexico.


question:
Context: Coming off their Sunday night road win over the Packers, the Cowboys went home for a Week 4 NFC East showdown with the Washington Redskins. In the first quarter, the 'Boys shot first as QB Tony Romo completed a 21-yard TD pass to TE Jason Witten. In the second quarter, the Redskins took the lead as QB Jason Campbell completed a 3-yard TD pass to WR James Thrash and a 2-yard TD pass to WR Antwaan Randle El, along with kicker Shaun Suisham getting a 20-yard field goal. Dallas closed out the half with kicker Nick Folk getting a 36-yard field goal. In the third quarter, the Cowboys tied the game with Romo completing a 10-yard TD pass to WR Terrell Owens. Washington would respond with Suisham kicking a 33-yard field goal. In the fourth quarter, the Redskins increased their lead with Suisham nailing a 33-yard and a 29-yard field goal. The 'Boys tried to rally as Romo completed an 11-yard TD pass to WR Miles Austin. However, Dallas' onside kick attempt failed, preserving the Redskins' win. 
 Question: In what quarter was the longest touchdown pass?
answer:
first


question:
Context: Carbon is an element. By itself, its a black solid. You can see a lump of carbon in Figure 18.10. Carbon is incredibly important because of what it makes when it combines with many other elements. Carbon can form a wide variety of substances. For example, in the air, carbon combines with oxygen to form the gas carbon dioxide. In living things, carbon combines with several other elements. For example, it may combine with nitrogen and In the carbon cycle, carbon moves through living and nonliving things. Carbon actually moves through two cycles that overlap. One cycle is mainly biotic; the other cycle is mainly abiotic. Both cycles are shown in Figure 18.11. Producers such as plants or algae use carbon dioxide in the air to make food. The organisms combine carbon dioxide with water to make sugar. They store the sugar as starch. Both sugar and starch are carbohydrates. Consumers get carbon when they eat producers or other consumers. Carbon doesnt stop there. Living things get energy from food in a process called respiration. This releases carbon dioxide back into the atmosphere. The cycle then repeats. Carbon from decaying organisms enters the ground. Some carbon is stored in the soil. Some carbon may be stored underground for millions of years. This will form fossil fuels. When volcanoes erupt, carbon from the mantle is released as carbon dioxide into the air. Producers take in the carbon dioxide to make food. Then the cycle repeats. The oceans also play an important role in the carbon cycle. Ocean water absorbs carbon dioxide from the air. In fact, the oceans contain 50 times more carbon than the atmosphere. Much of the carbon sinks to the bottom of the oceans, where it may stay for hundreds of years. Human actions are influencing the carbon cycle. Burning of fossil fuels releases the carbon dioxide that was stored in ancient plants. Carbon dioxide is a greenhouse gas and is a cause of global warming. Forests are also being destroyed. Trees may be cut down for their wood, or they may be burned to clear the land for farming. Burning wood releases more carbon dioxide into the atmosphere. You can see how a tropical rainforest was cleared for farming in Figure 18.12. With forests shrinking, there are fewer trees to remove carbon dioxide from the air. This makes the greenhouse effect even worse. Living things also need nitrogen. Nitrogen is a key element in proteins. Like carbon, nitrogen cycles through ecosystems. You can see the nitrogen cycle in Figure 18.13. Air is about 78 percent nitrogen. Decomposers release nitrogen into the air from dead organisms and their wastes. However, producers such as plants cant use these forms of nitrogen. Nitrogen must combine with other elements before producers can use it. This is done by certain bacteria in the soil. Its called fixing nitrogen. Nitrogen is one of the most important nutrients needed by plants. Thats why most plant fertilizers contain nitrogen. Adding fertilizer to soil allows more plants to grow. As a result, a given amount of land can produce more food. So far, so good. But what happens next? Rain dissolves fertilizer in the soil. Runoff carries it away. The fertilizer ends up in bodies of water, from ponds to oceans. The nitrogen is a fertilizer in the water bodies. Since there is a lot of nitrogen it causes algae to grow out of control. Figure 18.14 shows a pond covered with algae. Algae may use up so much oxygen in the water that nothing else can grow. Soon, even the algae die out. Decomposers break down the dead tissue and use up all the oxygen in the water. This creates a dead zone. A dead zone is an area in a body of water where nothing grows because there is too little oxygen. There is a large dead zone in the Gulf of Mexico. You can see it Figure 18.14. 
 Question: process in which living things obtain energy from food
answer:

respiration