897
Havel , who helped lead the " velvet revolution " that ousted the Communist regime in Prague in 1989 , invited Albright , then working for a private foreign policy think tank , to advise his new democratic government in 1990 .
 else: Communist; person: Havel; person: Albright; location: Prague
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
Answer:
 else: Communist; person: Havel; person: Albright; location: Prague