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He left no children ; but in later years his sister 's grandson Philipp Melanchthon was like a son to him till the Reformation estranged them .
 person: Philipp Melanchthon; organization: Reformation
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: Philipp Melanchthon, Reformation 
Answer:
 person: Philipp Melanchthon; organization: Reformation