77091
The counts of Celje , a feudal family from this area who in 1436 acquired the title of state princes , were Habsburgs ' powerful competitors for some time .
 Celje, Habsburgs
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Celje, Habsburgs