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: In order to determine the prevalence of latent infection due to Mycobacterium tuberculosis in drug users and to provide centres for drug users with a practical tool for tuberculosis screening, 237 drug users were subjected to the Monotest and, for reference purposes, to the Mantoux test. The overall prevalence of subjects with a tuberculin skin reaction size > or = 5 mm in the Mantoux test was 25.7%; utilizing a cut-off of > or = 10 mm, the prevalence was 11.4%. Irrespective of cut-off, the Monotest showed a sensitivity of > 90% and a specificity of > 80%. At a prevalence of 25.7%, and with cut-offs of > or = 5 or > or = 10 mm, the positive predictive value was 83% or 62.2%, respectively. Irrespective of cut-off, the negative predictive value was > 97%. In conclusion, the Monotest proved satisfactory as a tool for epidemiological screening in a population with a high prevalence for latent tuberculosis, namely drug users. 
 Question: The Mantoux test detects what latent infection/disease?

Ex Output:
tuberculosis


Ex Input:
Context: Extrusive igneous rocks cool at the surface. Volcanoes are one type of feature that forms from extrusive rocks. Several other interesting landforms are also extrusive features. Intrusive igneous rocks cool below the surface. These rocks do not always remain hidden. Rocks that formed in the crust are exposed when the rock and sediment that covers them is eroded away. When lava is thick, it flows slowly. If thick lava makes it to the surface, it cannot flow far from the vent. It often stays right in the middle of a crater at the top of a volcano. Here the lava creates a large, round lava dome (Figure A lava plateau is made of a large amount of fluid lava. The lava flows over a large area and cools. This creates a large, flat surface of igneous rock. Lava plateaus may be huge. The Columbia Plateau covers over 161,000 square kilometers (63,000 square miles). It makes up parts of the states of Washington, Oregon, and Idaho. Thin, fluid lava created the rock that makes up the entire ocean floor. This is from multiple eruptions from vents at the mid-ocean ridge. While not exactly a lava plateau, its interesting to think about so much lava! New land is created in volcanic eruptions. The Hawaiian Islands are shield volcanoes. These volcanoes formed from fluid lava (Figure 8.21). The island grows as lava is added on the coast. New land may also emerge from lava that erupts from beneath the water. This is one way that new land is created. Magma that cools underground forms intrusions (Figure 8.22). Intrusions become land formations if they are exposed at the surface by erosion. Water works its way through porous rocks or soil. Sometimes this water is heated by nearby magma. If the water makes its way to the surface, it forms a hot spring or a geyser. When hot water gently rises to the surface, it creates a hot spring. A hot spring forms where a crack in the Earth allows water to reach the surface after being heated underground. Many hot springs are used by people as natural hot tubs. Some people believe that hot springs can cure illnesses. Hot springs are found all over the world, even in Antarctica! Geysers are also created by water that is heated beneath the Earths surface. The water may become superheated by magma. It becomes trapped in a narrow passageway. The heat and pressure build as more water is added. When the pressure is too much, the superheated water bursts out onto the surface. This is a geyser. There are only a few areas in the world where the conditions are right for the formation of geysers. Only about 1,000 geysers exist worldwide. About half of them are in the United States. The most famous geyser is Old Faithful at Yellowstone National Park (Figure 8.23). It is rare for a geyser to erupt so regularly, which is why Old Faithful is famous. 
 Question: hot water under pressure that forcefully erupts out of the surface

Ex Output:
geyser


Ex Input:
Context: In Egypt, circa 1290 BC, high priest Imhotep engages in an affair with Anck-su-Namun, the mistress of Pharaoh Seti, despite strict rules that other men are forbidden to touch her. When the Pharaoh discovers their tryst, Imhotep and Anck-su-Namun murder the monarch. Imhotep is dragged away by his priests before the Pharaoh's guards can discover his involvement; Anck-su-Namun then kills herself, intending for Imhotep to resurrect her. After Anck-su-Namun's burial, Imhotep breaks into her crypt and steals her corpse. He and his priests flee across the desert to Hamunaptra, the City of the Dead, where they begin the resurrection ceremony. However, they are caught by Seti's guards before the ritual could be completed, and Anck-su-Namun's soul is sent back to the Underworld. For their sacrilege, Imhotep's priests are mummified alive, and Imhotep himself is forced to endure the curse of Hom Dai: his tongue is cut out and he is buried alive with a swarm of flesh-eating scarabs. The ritual curses him to become an immortal walking plague if he were ever to be resurrected. He is buried under high security, sealed away in a sarcophagus below a statue of the Egyptian god Anubis, and kept under strict surveillance throughout the ages by the Medjai, descendants of Seti's palace guards. If Imhotep were ever to be released, the powers that made him immortal would allow him to unleash a wave of destruction and death upon the Earth.In 1923, soldiers from the French Foreign Legion, led by American Rick O'Connell, make a final stand at Hamunaptra against an overwhelming force of Medjai warriors. The soldiers are massacred and O'Connell makes a final retreat inside the city, only to be cornered by a group of Medjai. However, they flee when Imhotep's evil presence manifests itself, leaving him to die in the desert.In 1926, Cairo librarian and aspiring Egyptologist, Evelyn Carnahan is presented with an intricate box and map by her bumbling brother Jonathan, who says he found it in Thebes. The map seems to point the way to the lost city of Hamunaptra, where all of the wealth of Egypt was supposedly stored; however, the museum curator, Dr. Bey, dismisses Hamunaptra as a myth, and accidentally damages the map. Jonathan reveals he actually stole it from an American (revealed to be O'Connell), who is currently in prison, and may be able to tell more about Hamunaptra. Rick tells them that he knows the location of the city from his days in the Foreign Legion. He makes a deal with Evelyn to reveal the location of Hamunaptra, in exchange for Evelyn saving Rick from being hanged. Evelyn successfully negotiates his release from the prison warden by offering him 25% of the found treasure; however, the warden insist on coming along in order to protect his investment. They board a ship to start their expedition to the city, where they encounter a band of American treasure hunters led by the famed Egyptologist Dr. Allen Chamberlain, and guided by Beni Gabor, a cowardly former Legion soldier who served with Rick and also knows the location of the lost city.During the journey, the boat is invaded by Medjai soldiers who are looking for Evelyn's box and the map. The expedition manages to fight them off, but the map is lost and the boat goes up in flames, forcing the entire party to go ashore. Rick, Evelyn and Jonathan are separated from the other treasure hunters and procure camels at a nearby market. Since Rick knows the way to the city, they arrive at Hamunaptra at the same time as the other party, but due to tensions between the two groups, they start exploring the city in separate locations. The Americans discover a chest between the legs of the statue of Anubis. They have it opened by several of their carriers, but the chest is booby-trapped and the carriers die from an acid spray. In the meanwhile, Evelyn is looking for the Book of Amun-Ra, a solid gold book supposedly capable of taking life away. Her team discovers a tomb buried directly below the statue of Anubis 
 Question: who is sealed away in a sarcophagus at the feet of a statue of the Egyptian god Anubis and kept under strict surveillance by the Medjai to prevent Imhotep's return?

Ex Output:

imhotep