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The most important was Jan z Jenštejna , who following the resignation of his uncle Jan Očko z Vlašime became the 1378 Prague Archbishop .
 Jan z, Jan Očko z Vlašime
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Jan z, Jan Očko z Vlašime