671
Career Karting & early career Král began his motorsport career in karting back in 1998 , and during the following seven years he achieved notable success , winning the Czech Republic ICA Junior title in 2003 and the Czech ICA 100 Championship the following year , as well as numerous other titles .
 Král, Czech, Czech
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Král, Czech, Czech