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The Etching Revival is the name given by at the time , and by art historians , to the renaissance of etching as an original form of printmaking during a period of time stretching approximately from 1850 to 1930 .
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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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