4560
They started off 20 years ago in a local radio station and became an enormous success on stage and not just here in Serbia .
 date: 20 years ago; geographical social political: Serbia
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: 20 years ago; geographical social political: Serbia