input: Please answer the following: Extract the answer to the question from the following context. Question: How do humans play a role in breeding dogs? Context: Most breeds of dog are at most a few hundred years old, having been artificially selected for particular morphologies and behaviors by people for specific functional roles. Through this selective breeding, the dog has developed into hundreds of varied breeds, and shows more behavioral and morphological variation than any other land mammal. For example, height measured to the withers ranges from 15.2 centimetres (6.0 in) in the Chihuahua to about 76 cm (30 in) in the Irish Wolfhound; color varies from white through grays (usually called "blue") to black, and browns from light (tan) to dark ("red" or "chocolate") in a wide variation of patterns; coats can be short or long, coarse-haired to wool-like, straight, curly, or smooth. It is common for most breeds to shed this coat.
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output: artificially selected

input: Please answer the following: Extract the answer to the question from the following context. Question: Why is the lack of predation a problem for water features? Context: The elimination of wolves from Yellowstone National Park had profound impacts on the trophic pyramid. Without predation, herbivores began to over-graze many woody browse species, affecting the area's plant populations. In addition, wolves often kept animals from grazing in riparian areas, which protected beavers from having their food sources encroached upon. The removal of wolves had a direct effect on beaver populations, as their habitat became territory for grazing. Furthermore, predation keeps hydrological features such as creeks and streams in normal working order. Increased browsing on willows and conifers along Blacktail Creek due to a lack of predation caused channel incision because they helped slow the water down and hold the soil in place.
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output: predation keeps hydrological features such as creeks and streams in normal working order

input: Please answer the following: Extract the answer to the question from the following context. Question: What is the nationality of people from the state where the Institute of Technology founded in 1861 is located? Context: Polytechnic Institutes are technological universities, many dating back to the mid-19th century. A handful of world-renowned Elite American universities include the phrases "Institute of Technology", "Polytechnic Institute", "Polytechnic University", or similar phrasing in their names; these are generally research-intensive universities with a focus on engineering, science and technology. The earliest and most famous of these institutions are, respectively, Rensselaer Polytechnic Institute (RPI, 1824), New York University Tandon School of Engineering (1854) and the Massachusetts Institute of Technology (MIT, 1861). Conversely, schools dubbed "technical colleges" or "technical institutes" generally provide post-secondary training in technical and mechanical fields, focusing on training vocational skills primarily at a community college levelparallel and sometimes equivalent to the first two years at a bachelor's degree-granting institution.
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output: American

input: Please answer the following: Extract the answer to the question from the following context. Question: What is unique about owls? Context: Many birds show plumage patterns in ultraviolet that are invisible to the human eye; some birds whose sexes appear similar to the naked eye are distinguished by the presence of ultraviolet reflective patches on their feathers. Male blue tits have an ultraviolet reflective crown patch which is displayed in courtship by posturing and raising of their nape feathers. Ultraviolet light is also used in foragingkestrels have been shown to search for prey by detecting the UV reflective urine trail marks left on the ground by rodents. The eyelids of a bird are not used in blinking. Instead the eye is lubricated by the nictitating membrane, a third eyelid that moves horizontally. The nictitating membrane also covers the eye and acts as a contact lens in many aquatic birds. The bird retina has a fan shaped blood supply system called the pecten. Most birds cannot move their eyes, although there are exceptions, such as the great cormorant. Birds with eyes on the sides of their heads have a wide visual field, while birds with eyes on the front of their heads, such as owls, have binocular vision and can estimate the depth of field. The avian ear lacks external pinnae but is covered by feathers, although in some birds, such as the Asio, Bubo and Otus owls, these feathers form tufts which resemble ears. The inner ear has a cochlea, but it is not spiral as in mammals.
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output:
have binocular vision and can estimate the depth of field