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He was then a legislative adviser in the Ministry of Justice and the Police from 1988 to 1996 , when he was hired as a research fellow at the University of Oslo Centre for European Law .
 Ministry, Justice, Police, University of Oslo
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Ministry, Justice, Police, University of Oslo