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Common sorts of vection include circular vection , where an observer is placed at the centre of rotation of a large vertically oriented , rotating drum , usually painted with vertical stripes , linear vection , where an observer views a field that either approaches or recedes , and roll vection , where an observer views a patterned disk rotating around his or her line of sight .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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