8531
I 'd think any 14-year-old boy would get a kick out of visiting the Checkpoint Charlie museum with its stories of daring flights from communist  East Berlin  into the West and the cloak-and-dagger  Stasi  museum the repository of all things to do with the notorious East German secret police .
 city of headquarters: East Berlin, Stasi
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 city of headquarters: East Berlin, Stasi