11910
In the late 18th century  Boston  became known as the Cradle of  Liberty  for the agitation there that led to the American Revolution and the independence of the United States from Great Britain .
 city of headquarters: Boston, Liberty
Given options, please tell me the relationships of all the listed entity pairs.Output format is "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} 
 Entity Pairs:  Boston, Liberty 
Answer:
 city of headquarters: Boston, Liberty