319705
Her best finish at the FIS Nordic World Ski Championships was 12th twice in the 4 x 5 km relay ( 2007 , 2009 ) while her best individual finish was 31st in the 30 km event at Liberec in 2009 .
 Liberec
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Liberec