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Walter Savitch has criticized the terminology " context-sensitive " as misleading and proposed " non-erasing " as better explaining the distinction between a CSG and an unrestricted grammar .
 person: Walter Savitch
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: Walter Savitch 
Answer:
 person: Walter Savitch