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Hron z Vlašimě , son of Mařík , died with King John of Bohemia at the famous Battle of Crécy in 1346 fighting Edward , The Black Prince .
 z, John of Bohemia, Edward , The Black Prince
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 z, John of Bohemia, Edward , The Black Prince