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Instrumentation Woodwinds Brass Percussion Strings Overview New music , old forms By the summer of 1878 , Tchaikovsky , exhausted from working on the Fourth Symphony the previous year , decided he needed a sabbatical from symphonic music .
 person: Tchaikovsky
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:
 person: Tchaikovsky