Given a context passage, generate a question from the passage such that its answer is shortest continous span from the passage.

Input: Consider Input: Oil is a liquid fossil fuel that is extremely useful because it can be transported easily and can be used in cars and other vehicles. Oil is currently the single largest source of energy in the world. Oil from the ground is called crude oil, which is a mixture of many different hydrocarbons. Crude oil is a thick dark brown or black liquid hydrocarbon. Oil also forms from buried dead organisms, but these are tiny organisms that live on the sea surface and then sink to the seafloor when they die. The dead organisms are kept away from oxygen by layers of other dead creatures and sediments. As the layers pile up, heat and pressure increase. Over millions of years, the dead organisms turn into liquid oil. In order to be collected, the oil must be located between a porous rock layer and an impermeable layer (Figure 1.1). Trapped above the porous rock layer and beneath the impermeable layer, the oil will remain between these layers until it is extracted from the rock. Oil (red) is found in the porous rock layer (yellow) and trapped by the impermeable layer (brown). The folded structure has allowed the oil to pool so a well can be drilled into the reservoir. To separate the different types of hydrocarbons in crude oil for different uses, the crude oil must be refined in refineries like the one shown in Figure 1.2. Refining is possible because each hydrocarbon in crude oil boils at a different temperature. When the oil is boiled in the refinery, separate equipment collects the different compounds. Most of the compounds that come out of the refining process are fuels, such as gasoline, diesel, and heating oil. Because these fuels are rich sources of energy and can be easily transported, oil provides about 90% of the energy used for transportation around the world. The rest of the compounds from crude oil are used for waxes, plastics, fertilizers, and other products. Gasoline is in a convenient form for use in cars and other transportation vehicles. In a car engine, the burned gasoline mostly turns into carbon dioxide and water vapor. The fuel releases most of its energy as heat, which causes the gases to expand. This creates enough force to move the pistons inside the engine and to power the car. Refineries like this one separate crude oil into many useful fuels and other chemi- cals. Click image to the left or use the URL below. URL: The United States does produce oil, but the amount produced is only about one-quarter as much as the nation uses. The United States has only about 1.5% of the worlds proven oil reserves, so most of the oil used by Americans must be imported from other nations. The main oil-producing regions in the United States are the Gulf of Mexico, Texas, Alaska, and California (Figure As in every type of mining, mining for oil has environmental consequences. Oil rigs are unsightly (Figure 1.4), and spills are too common (Figure 1.5). Click image to the left or use the URL below. URL: Offshore well locations in the Gulf of Mex- ico. Note that some wells are located in very deep water. Drill rigs at the San Ardo Oil Field in Monterey, California.

Output: crude oil is a mixture of many different

Input: Consider Input: Set on the campus of a small New England college, the film focuses on the volatile relationship of a middle-aged couple: associate history professor George (Richard Burton) and his hard-drinking wife Martha (Elizabeth Taylor), the daughter of the college president.It's 2:00 a.m. on a Sunday morning, and they have returned from one of her father's gatherings. Martha announces she has invited a young couple--Nick (George Segal), a young, good-looking, newly appointed instructor, and his mousey wife Honey (Sandy Dennis)--to join them for late-night drinks. George is disturbed because she did so without consulting him first, prompting Martha to launch into the first of many loud and lengthy tirades during which she taunts and criticizes him. Knowing his wife is drunk and quite lewd, he asks her to behave herself when they arrive, and when the doorbell rings, he warns her to refrain from mentioning their child to their company.Overhearing Martha's crude retort as the door opens, Nick and Honey immediately feel ill at ease and quickly find themselves caught in the middle of a verbal war zone when their efforts to engage in small talk set off a volley of insults between their hosts. Martha begins to flirt lewdly with Nick while his meek wife tries to pretend she is unaware of what is happening.While Martha is showing Honey where the bathroom is, George tests Nick's verbal sparring skills, but the young man is no match for his host. Realizing he and his wife are becoming embroiled in the middle of marital warfare, he suggests they depart, but George cajoles him into staying.Upon returning to the living room alone, Honey innocently mentions to George she was unaware he and Martha had a son on the verge of celebrating his 16th birthday. Martha reappears in a new outfit--form-fitting slacks and a revealing blouse--and when her husband makes a snide remark about the ensemble, she begins to demean his abilities as a teacher, then escalates her seduction of Nick, complimenting him on the body he developed as both a quarterback and an intercollegiate state boxing champion while criticizing George's paunch. She informs their guests about a past incident when George refused to engage in a friendly outdoor boxing match with his father-in-law and Martha put on a pair of gloves and punched him in the jaw, knocking him into the bushes. As she relates the story, George aims a shotgun at the back of her head, causing Honey to scream. He pulls the trigger, which releases an umbrella, while he tells his wife she's dead.Honey again raises the subject of George and Martha's son, prompting the couple to engage in a conversation Martha quickly tries to end without success. To counterattack George's relentless comments about the boy, she tells their guests her husband is unsure the child is his own, although he most assuredly is. They argue about the color of the boy's eyes until George threatens to expose the truth about the boy. Furious, Martha accuses him of being a failure whose youthful, idealistic plans for the future slowly deteriorated as he came to realize he wasn't aggressive enough to follow in his father-in-law's footsteps, leaving her stuck with a flop. George cuts the diatribe short by spinning Honey around and mockingly singing, "Who's afraid of Virginia Woolf?", a joke the shrewed Martha had made herself during the party earlier that evening.Inebriated and on the verge of throwing up from George's spinning, Honey rushes from the room. Martha goes to the kitchen to make coffee, and George and Nick go outside. The younger man confesses he was attracted to Honey more for her family's money than passion, and married her only because she mistakenly believed she was pregnant. George describes his own marriage as one of never-ending accommodation and adjustment, then admits he considers Nick a threat. George also tells a story about a boy he grew up with. This boy had accidentally killed his mother. Years later, George claims the boy was driving with his father. He swerved to "miss a porcupine" in the road,

Output: Who accuses Nick of being sexually inadequate?

Input: Consider Input: The Paleozoic is the furthest back era of the Phanerozoic and it lasted the longest. But the Paleozoic was relatively recent, beginning only 570 million years ago. Compared with the long expanse of the Precambrian, the Phanerozoic is recent history. Much more geological evidence is available for scientists to study so the Phanerozoic is much better known. The Paleozoic begins and ends with a supercontinent. At the beginning of the Paleozoic, the supercontinent Rodinia began to split up. At the end, Pangaea came together. A mountain-building event is called an orogeny. Orogenies take place over tens or hundreds of millions of years. As continents smash into microcontinents and island arcs collided, mountains rise. Geologists find evidence for the orogenies that took place while Pangaea was forming in many locations. For example, Laurentia collided with the Taconic Island Arc during the Taconic Orogeny (Figure 1.1). The remnants of this mountain range make up the Taconic Mountains in New York. The Taconic Orogeny is an example of a collision between a continent and a volcanic island arc. Laurentia experienced other orogenies as it merged with the northern continents. The southern continents came together to form Gondwana. When Laurentia and Gondwana collided to create Pangaea, the Appalachians rose. Geologists think they may once have been higher than the Himalayas are now. Pangaea was the last supercontinent on Earth. Evidence for the existence of Pangaea was what Alfred Wegener used to create his continental drift hypothesis, which was described in the chapter Plate Tectonics. As the continents move and the land masses change shape, the shape of the oceans changes too. During the time of Pangaea, about 250 million years ago, most of Earths water was collected in a huge ocean called Panthalassa (Figure 1.2). Click image to the left or use the URL below. URL:
Output: this mountain range grew much higher when gondwana and laurentia collided to create pangaea.