5504
In December of 1990 , Slobodan Milosevic is elected President in Serbia 's first free elections in 50 years .
 date: December of 1990; person: Slobodan Milosevic; geographical social political: Serbia; ordinal: first; date: 50 years
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: date, organization, person, geographical social political, national religious political, facility, cardinal, location, work of art, law, event, product, ordinal, percent, time, quantity, money, language 
Text: {0} 
Answer:
 date: December of 1990; person: Slobodan Milosevic; geographical social political: Serbia; ordinal: first; date: 50 years