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The muscles of the colon then move the watery waste material forward and slowly absorb all the excess water , causing the stools to gradually solidify as they move along into the descending colon . | Wiki1k:wikipedia:59366:28:4 | 28 | move | true | move | [
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Water absorption at the colon typically proceeds against a transmucosal osmotic pressure gradient . | Wiki1k:wikipedia:59366:30:0 | 6 | proceeds | true | proceed | [
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This hypertonic fluid creates an osmotic pressure that drives water into the lateral intercellular spaces by osmosis via tight junctions and adjacent cells , which then in turn moves across the basement membrane and into the capillaries . | Wiki1k:wikipedia:59366:30:2 | 3 | creates | true | create | [
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In the outer Solar System , comets remain frozen and inactive and are extremely difficult or impossible to detect from Earth due to their small size . | Wiki1k:wikipedia:5962:15:0 | 7 | remain | true | remain | [
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Statistical detections of inactive comet nuclei in the Kuiper belt have been reported from observations by the Hubble Space Telescope but these detections have been questioned . | Wiki1k:wikipedia:5962:15:1 | 12 | reported | true | report | [
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As a comet approaches the inner Solar System , solar radiation causes the volatile materials within the comet to vaporize and stream out of the nucleus , carrying dust away with them . | Wiki1k:wikipedia:5962:15:2 | 3 | approaches | true | approach | [
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Periodic comets or short-period comets are generally defined as those having orbital periods of less than 200 years . | Wiki1k:wikipedia:5962:21:0 | 7 | defined | true | define | [
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They usually orbit more-or-less in the ecliptic plane in the same direction as the planets . | Wiki1k:wikipedia:5962:21:1 | 2 | orbit | true | orbit | [
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They usually orbit more-or-less in the ecliptic plane in the same direction as the planets . | Wiki1k:wikipedia:5962:21:1 | 2 | orbit | true | orbit | [
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Their orbits typically take them out to the region of the outer planets -LRB- Jupiter and beyond -RRB- at aphelion ; for example , the aphelion of Halley 's Comet is a little beyond the orbit of Neptune . | Wiki1k:wikipedia:5962:21:2 | 3 | take | true | take | [
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Comets whose aphelia are near a major planet 's orbit are called its `` family '' . | Wiki1k:wikipedia:5962:21:3 | 11 | called | true | call | [
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As of November 2014 there are 5,253 known comets , a number that is steadily increasing as they are discovered . | Wiki1k:wikipedia:5962:3:0 | 15 | increasing | true | increase | [
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However , this represents only a tiny fraction of the total potential comet population , as the reservoir of comet-like bodies in the outer Solar System -LRB- in the Oort cloud -RRB- is estimated to be one trillion . | Wiki1k:wikipedia:5962:3:1 | 3 | represents | true | represent | [
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However , this represents only a tiny fraction of the total potential comet population , as the reservoir of comet-like bodies in the outer Solar System -LRB- in the Oort cloud -RRB- is estimated to be one trillion . | Wiki1k:wikipedia:5962:3:1 | 33 | estimated | true | estimate | [
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Particularly bright examples are called `` Great Comets '' . | Wiki1k:wikipedia:5962:3:3 | 4 | called | true | call | [
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Comets have been visited by unmanned probes such as the European Space Agency 's Rosetta , which became the first ever to land a robotic spacecraft on a comet , and NASA 's Deep Impact , which blasted a crater on Comet Tempel 1 to study its interior . | Wiki1k:wikipedia:5962:3:4 | 17 | became | true | become | [
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In 1950 , Fred Lawrence Whipple proposed that rather than being rocky objects containing some ice , comets were icy objects containing some dust and rock . | Wiki1k:wikipedia:5962:51:0 | 6 | proposed | true | propose | [
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In 1950 , Fred Lawrence Whipple proposed that rather than being rocky objects containing some ice , comets were icy objects containing some dust and rock . | Wiki1k:wikipedia:5962:51:0 | 21 | containing | true | contain | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 8 | accepted | true | accept | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 23 | including | true | include | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 59 | observed | true | observe | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 59 | observed | true | observe | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 54 | photographed | true | photograph | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 43 | flew | true | fly | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 43 | flew | true | fly | [
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This `` dirty snowball '' model soon became accepted and appeared to be supported by the observations of an armada of spacecraft -LRB- including the European Space Agency 's Giotto probe and the Soviet Union 's Vega 1 and Vega 2 -RRB- that flew through the coma of Halley 's Comet in 1986 , photographed the nucleus , and observed jets of evaporating material . | Wiki1k:wikipedia:5962:51:1 | 7 | became | true | become | [
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The moisture classification includes climatic classes with descriptors such as hyperhumid , humid , subhumid , subarid , semi-arid -LRB- values of − 20 to − 40 -RRB- , and arid -LRB- values below − 40 -RRB- . | Wiki1k:wikipedia:5999:21:0 | 3 | includes | true | include | [
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"climatic classes",
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