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Early career Nedvěd started his professional hockey career with IHC Písek and HC Liberec before joining HC Sparta Prague in 1990 for one season .
 Nedvěd, HC Liberec, HC Sparta Prague
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Nedvěd, HC Liberec, HC Sparta Prague