6543
Yugoslav First League ( 4 ) : 1955–56 , 1956–57 , 1958–59 , 1959–60
 Yugoslav First League, 1955–56, 1956–57, 1958–59, 1959–60
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Yugoslav First League, 1955–56, 1956–57, 1958–59, 1959–60