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Jon Ritman is a software developer , notable for his work on major 1980s video games .
 person: Jon Ritman
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: Jon Ritman 
Answer:
 person: Jon Ritman