In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Input: Consider Input: Passage: A tsunami is an unusual form of wave caused by an infrequent powerful event such as an underwater earthquake or landslide, a meteorite impact, a volcanic eruption or a collapse of land into the sea. These events can temporarily lift or lower the surface of the sea in the affected area, usually by a few feet. The potential energy of the displaced seawater is turned into kinetic energy, creating a shallow wave, a tsunami, radiating outwards at a velocity proportional to the square root of the depth of the water and which therefore travels much faster in the open ocean than on a continental shelf. In the deep open sea, tsunamis have wavelengths of around 80 to 300 miles (130 to 480 km), travel at speeds of over 600 miles per hour (970 km/hr) and usually have a height of less than three feet, so they often pass unnoticed at this stage. In contrast, ocean surface waves caused by winds have wavelengths of a few hundred feet, travel at up to 65 miles per hour (105 km/h) and are up to 45 feet (14 metres) high.A trigger event on the continental shelf may cause a local tsunami on the land side and a distant tsunami that travels out across the ocean. The energy of the wave is dissipated only gradually, but is spread out over the wave front, so as the wave radiates away from the source, the front gets longer and the average energy reduces, so distant shores will, on average, be hit by weaker waves. However, as the speed of the wave is controlled by the water depth, it does not travel at the same speed in all directions, and this affects the direction of the wave front - an effect known as refraction - which can focus the strength of the advancing tsunami on some areas and weaken it in others according to undersea topography.
As a tsunami moves into shallower water its speed decreases, its wavelength shortens and its amplitude increases enormously, behaving in the same way as a wind-generated wave in shallow water, but on a vastly greater scale.  Either the trough or the crest of a tsunami can arrive at the coast first. In the former case, the sea draws back and leaves subtidal areas close to the shore exposed which provides a useful warning for people on land. When the crest arrives, it does not usually break but rushes inland, flooding all in its path. Much of the destruction may be caused by the flood water draining back into the sea after the tsunami has struck, dragging debris and people with it. Often several tsunami are caused by a single geological event and arrive at intervals of between eight minutes and two hours. The first wave to arrive on shore may not be the biggest or most destructive.  Occasionally, a tsunami may transform into a bore, typically in a shallow bay or an estuary.

Output: What two types of tsunami's can a trigger event on the continental shelf cause?


Input: Consider Input: Passage: The Early Netherlandish masters' influence reached artists such as Stefan Lochner and the painter known as the Master of the Life of the Virgin, both of whom, working in mid-15th-century Cologne, drew inspiration from imported works by van der Weyden and Bouts. New and distinctive painterly cultures sprang up; Ulm, Nuremberg, Vienna and Munich were the most important artistic centres in the Holy Roman Empire at the start of the 16th century. There was a rise in demand for printmaking (using woodcuts or copperplate engraving) and other innovations borrowed from France and southern Italy. Some 16th-century painters borrowed heavily from the previous century's techniques and styles. Even progressive artists such as Jan Gossaert made copies, such as his reworking of van Eyck's Madonna in the Church. Gerard David linked the styles of Bruges and Antwerp, often travelling between the cities. He moved to Antwerp in 1505, when Quentin Matsys was the head of the local painters' guild, and the two became friends.By the 16th century the iconographic innovations and painterly techniques developed by van Eyck had become standard throughout northern Europe. Albrecht Dürer emulated van Eyck's precision. Painters enjoyed a new level of respect and status; patrons no longer simply commissioned works but courted the artists, sponsoring their travel and exposing them to new and wide-ranging influences. Hieronymus Bosch, active in the late 15th and early 16th centuries, remains one of the most important and popular of the Netherlandish painters. He was anomalous in that he largely forewent realistic depictions of nature, human existence and perspective, while his work is almost entirely free of Italian influences. His better-known works are instead characterised by fantastical elements that tend towards the hallucinatory, drawing to some extent from the vision of hell in van Eyck's Crucifixion and Last Judgement diptych. Bosch followed his own muse, tending instead towards moralism and pessimism. His paintings, especially the triptychs, are among the most significant and accomplished of the late Netherlandish period
The Reformation brought changes in outlook and artistic expression as secular and landscape imagery overtook biblical scenes. Sacred imagery was shown in a didactic and moralistic manner, with religious figures becoming marginalized and relegated to the background. Pieter Bruegel the Elder, one of the few who followed Bosch's style, is an important bridge between the Early Netherlandish artists and their successors. His work retains many 15th-century conventions, but his perspective and subjects are distinctly modern. Sweeping landscapes came to the fore in paintings that were provisionally religious or mythological, and his genre scenes were complex, with overtones of religious skepticism and even hints of nationalism.

Output: What is the full name of the Netherlandish painter who was anomalous in that he largely forewent realistic depictions of nature, human existence and perspective?


Input: Consider Input: Passage: Minnesota has four ecological provinces: Prairie Parkland, in the southwestern and western parts of the state; the Eastern Broadleaf Forest (Big Woods) in the southeast, extending in a narrowing strip to the state's northwestern part, where it transitions into Tallgrass Aspen Parkland; and the northern Laurentian Mixed Forest, a transitional forest between the northern boreal forest and the broadleaf forests to the south. These northern forests are a vast wilderness of pine and spruce trees mixed with patchy stands of birch and poplar.
Much of Minnesota's northern forest underwent logging at some time, leaving only a few patches of old growth forest today in areas such as in the Chippewa National Forest and the Superior National Forest, where the Boundary Waters Canoe Area Wilderness has some 400,000 acres (162,000 ha) of unlogged land. Although logging continues, regrowth and replanting keep about one third of the state forested. Nearly all of Minnesota's prairies and oak savannas have been fragmented by farming, grazing, logging, and suburban development.While loss of habitat has affected native animals such as the pine marten, elk, woodland caribou, and bison, others like whitetail deer and bobcat thrive. The state has the nation's largest population of timber wolves outside Alaska, and supports healthy populations of black bears, moose, and gophers. Located on the Mississippi Flyway, Minnesota hosts migratory waterfowl such as geese and ducks, and game birds such as grouse, pheasants, and turkeys. It is home to birds of prey, including the largest number of breeding pairs of bald eagles in the lower 48 states, as of 2007, red-tailed hawks, and snowy owls. The lakes teem with sport fish such as walleye, bass, muskellunge, and northern pike, and streams in the southeast and northeast are populated by brook, brown, and rainbow trout.
Output: What are the exact names of the four distinct ecological provinces in Minnesota?