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The array consisted of 2,048 dipole s over almost five acre s of land , and was built to constantly survey the sky at a time resolution of about 0.1 second s. This high time resolution set it apart from many other radio telescope s of the time , as astronomers did not expect emission from an object to feature such rapid variation .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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