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Microsoft has shared some of the source code with partner companies , but in general it vigorously guards that information from outsiders .
 Microsoft, partner companies, it, outsiders
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 Microsoft, partner companies, it, outsiders